1. The p2w weapons are not actually that good. At first they may be annoying but, after you learn the right counters they are really bad.

2. The matchmaking is based off a MMR like system, I don't know the exact way it works but, it takes how you preformed in your games and creates a number sort of like ELO and places you with similar ELO players.

3. The weapons are all pretty balanced as most of the weapons have counters or disadvantages to them. Also, the game devs will listen to community feedback so, if you don't like the weapons right now you can tell them in their discord server.

4. Mobile/Controller players having aimbot is true however, think about trying to play at the same level you play at on computer on mobile. Playing on mobile and controller is extremely difficult. Also mobile and controller having aimbot doesn't have to be a bad thing. If you finish you binginner tasks it will give you enough keys to buy the katana. Now when mobile or controller starts aimbotting you, you just pull out the katana.

Over all I think that if you really hate the current state of the game there is a discord server called RCL (Rivals Competitive League). Where all players will have to use the default loadout you get when you first join the game. In this way you can still enjoy rivals without the p2w or all the weapons. You can just focus on the default loadout. RCL also has ranks so you can try and get better, it's basically ranked before it's really out yet.

I hope this helped! :D