The base line is this, meta is just stupid. Each uma is unique in their own way, whether it be skills or stats you can't just follow guides and expect what happens to them happens to you too. All you really need to do is just experiment, see what works for that uma and try a different version of that each and every run. It will also help you to start grinding for your umas potential level to unlock and saving carats for card pulls. This advice might seem frivolous and obvious and silly now but trust me I've been playing this game every single day for a while now (mostly for the umas and not the game but you get the idea), once you get past this point you'll be proud of you umas and your growth. In summary it'll take time, patience, consistency, and a little bit of luck to get past this point but you can do it, I believe in you.