>>542244539
It's a good idea to realise this and approach CMs with realistic expectations. Also remember that CMs will get worse and worse as more support cards will be introduced which are mandatory to get unless you want to be at a massive disadvantage. If you are missing certain meta umas you are also screwed as your chances drain even more.
Focusing on endgame PvP in a gacha game let alone any game that allows p2w aspects is not a good idea. Only do this if you enjoy the process and preparation for CMs out of fun, otherwise you're going to be rather miserable as time goes.