Holy shit shaggy is titanfallchad??
Arena is not a game mode anyone plays because the matchmaking algorithm is busted and places a good player on a team with two bots that they're expected to carry, and whichever carry on either team is better basically decides the game. Or you could just 3 stack and stomp on everyone which is what most people do.
The reason Apex performance tanks your PC is because it's a Battle Royale. All BRs tank your PC from COD Warzone to Apex to PUBG etc because of the amount of players and environmental effects/equipment/abilities etc.
It's a good game you just need a computer to run it so you can enjoy it.