As every single one of you who plays this game knows, Amethyst made this game extremely difficult by nerfing everything that would give you any sort of edge. For example, the pickup ability for rare candies, fishing for magicarps, and event ghastly are no longer useful or usable options in this game. To make matters worse, the field effects for gym leaders and level caps of your Pokemon are completely insane. All of these factors make the game pretty much impossible without you having to do boring grinding at least once or a couple of times during your play through process.
However, there is one way you can cut the difficulty of the game by at least 60 percent that amethyst can never nerf or take out of the game. The easiest way to complete this overly difficult game is Blazekin.
A lot of you already probably knew this, but Blazekin (torchic) is the best starter by a long shot. But some of you might not know how great the gap is between blazekin and all other obtainable Pokemon in this game. Oh let me count the ways: this Pokemon gets an amazing attack and speed stat, amazing fire and fighting STABs that are hard to find in this game, amazing move sets with bulk up, and of course speed boost. Blazekin also has enough bulk to where it usually can live the first hit by an opponent and gain the speed boost to sweep the opponents team.
Amethyst Diliberately takes out all good Pokemon so that this game will be as ridiculously hard and so that you can't use good strategies that work against multiple opponents. This makes it so that you will inevitably get stuck at some point during the playthrough. However she can never take out Blazekin from the game because it is a starter Pokemon and she can't nerf it because she has to go by what the pokemon's stats and abilities actually are (if she ever does either of these things, I'll probably just quit playing this game out of principle). In short, Blazekin is your only surefire chance to get a Pokemon that is actually a good option.
You will find that Blazekin can use bulk up only once or twice coupled with speed boost and then it can easily sweep even gyms where it has weaknesses. Blazekin can also help sweep double battles and, though not as potent, Blazekin makes even double battles at least 60 percent easier than they would be otherwise. I guarantee that if you choose bazekin to be a part of your team, you will start to notice it winning most battles for you and carrying whatever team you pair it with.
If you were planning to use Blazekin, I would suggest you save before you pick your first Pokemon and then keep obtaining torchic until you get an adamant nature. Trust me, it helps immensely and it is worth it since you only have to do it once. You can get speed boost by using an ability capsule if it for some reason comes with the blaze ability instead.
Amethyst has made the power of the Pokemon that the opponents get considerably better than yours and has taken most of your offensive options away. By using Blazekin on your team, you can combat this somewhat unreasonably hard game.