I'm going to second this, although we talked about it a bit more and honestly this could fall under rule 1 or maybe even just common sense tbh; nobody is here in a recommendations topic to read non-constructive negative opinions.
As for my own recommendations so that I'm not just the big bad auth guy, at the moment the three things I've been trying to make Ame watch enjoyed the most and come to mind first recently are-
Yahari Ore no Seishun Love Come wa Machigatteiru. or My Teen Romantic Comedy SNAFU (and its sequel)
To Aru Majutsu(/Kagaku) no Index(/Railgun) or A Certain Magical(/Scientific) Index(/Railgun) (and the movie)
Aldnoah.Zero or Aldnoah.Zero
They're all pretty different genres and/or premises so I think there's probably something here someone would enjoy regardless.
I appreciate Oregairu in particular because romantic comedies are probably my favorite thing, and Yukino in particular is my favorite type of character (not necessarily tsundere but definitely an ice queen) so a lot of my investment in the series was paying way too much attention to her and Hachiman's interactions. I liked Hachiman a lot because yeah he's the anti-social main character wow so original but he's also not. Aside from the way he's introduced in the first two episodes (that is, incredibly pessimistic and whatnot) I always thought he was pretty real for the loner rom-com MC. He hates nice girls, but not because he thinks they're fake or because they won't date him as we might see in the real world, and instead because he finds himself thinking more into their niceness than he should. He's not getting special treatment. They're this nice to everyone. Idk about anyone else, but man, I've been there and reminded myself that so many times. He makes himself the target in most situations because he doesn't put any value on himself; things are resolved by him becoming the common enemy. He's actually a pretty cool guy. It's another anime about a group of friends in high school realising everything's not quite as easy as it once was and I like to think it has some pretty real themes.
It's got an endearing art style in the first season (imo) and then the second season really steps it up in terms of visual quality, and the two things I look for most in a series aside from the obvious stuff are the art style, and the soundtrack. I think it does pretty well in both of these. If anything bothers me about Oregairu as it is now, it's the "read the light novel" ending.
I realise I went into a lot of detail about Oregairu and probably won't do the same for the other two, but, if nothing else-
Raildex as a whole is a longer series (98 episodes + OVAs and a movie) that I kind of picked up on a whim, having known of its existence for a long time but never actually thought about watching it. I'm not an expert on the series by any means, but I did like the very fictional take on religion vs science along with all of the blurred lines in the form of the main character's friends. I'm a little upset, again, by the "read the light novel" ending here, but, at least in this case I waited long enough to watch the series that there ACTUALLY IS more of a LN to read for this one, if/when I get around to it. misaka is best girl how could you not love this face
As for soundtracks like I mentioned above, the movie in particular really stood out to me (probably because one of the introduced characters is a very good singer, surprise) to the point that I made a playlist of most of the vocal songs and throw it up in the background whenever I'm doing something that doesn't require sound or CPU power
For Aldnoah.Zero we're going to open up with the soundtrack this time because WHOO BOY it's my favorite part of the series. You know that guy, Sawano Hiroyuki? Like, Attack on Titan, Kill la Kill, Guilty Crown? it him. he here. it good. very good. shut up, ame.
I'll be fair and say that the plot of the series really kind of bothers me, because it's all one major miscommunication after another. Later on this is shown to probably be intentional, but it still doesn't change the fact that if these people had talked rationally about everything, the series could have ended in two episodes. But it didn't, and you know what, that's good because the really cool insert songs start in the third episode. If you like robots and upset victories because the main character is really fuckin' smart, here's a series.
___
So that's those and now I'm obligated to mention that Kyoto Animation is my favorite studio so some of my "old" favorites that I really really like include (in very short description)
Chuunibyou demo Koi ga Shitai! or Love, Chunibyo & Other Delusions! (and the sequel) - its SO GODDAMN CUTE AND SHICHIMIYA IS BEST GIRL AND EPISODE 10 OF THE SECOND SEASON WAS HEART WRENCHING BECAUSE I WAS IN HER EXACT POSITION AT THE TIME AND UNDERSTOOD
Kyoukai no Kanata or Beyond the Boundary - Incredibly well-animated and is an original (I think?) spin on a maybe-not-so-original concept. Complete with a movie following up on the series sometime this year, and KyoAni tends to not disappoint with their non-recap movies (read: The Disappearance of Haruhi Suzumiya), so I have high expectations.
Hyouka - Super chill and little to no drama; I love it because I DON'T HAVE TO FEEL. no jk but really this is something really chill if you want to just hang out and watch a series that isn't going to hype you up or tear you apart. It's a mystery anime, but, as opposed to really big dramatic mysteries, it's more about (and I read this quote in a review that I really liked) "finding wonder amidst the everyday." It's another high school setting yeah sure, but, I found that the main characters all had something about them that made me appreciate them and they all had their moments and I liked watching the opposite personalities interact. It's also cute (but not, like, moe-moe-desu-kyaa so don't worry if you don't like that) so I really enjoyed it. It's probably my favorite of these three.