How do i even enjoy this game anymore

First 30 hours i liked it but it started getting kinda boring just constantly getting killed by snipers, campers, and helis, helis and planes are the worst because basically no one can do anything about them other than engineers. Also you basically can't play assault unless you plan on camping. The game is more vehicle than gun based. Also i hate the full of snipers open maps and when i play tdm even then theres way too much people just using m320's and law's and at this point i think these grenade/rocket launchers are so strong the regular guns are weak compared to them. Tell me if im doing something wrong or is the game doing something wrong?

Welcome to battlefield, stay a bit longer it gets fun once ur used to the misery

Support/Assault on infantry maps. Recon/Engineer on large/open maps. There are exceptions to this but you're late to the party and fighting uphill against people with years of experience.

Server browser on PC can help. On console I believe your server options are limited

Respectfully I'd say this is more of a skill issue, with you being new its understandable.

As an aggressive sniper player I struggled to begin with but once you start to understand where people typically play and why, you will improve drastically.

Vehicles were my biggest obstacle but you will get there! For me typically the land Vehicles are the nuisance as helis and jet pilots are shootable with your gun with enough practice. (I snipe the pilots so it is easier for me to see them but I have done it with ARs with coyote sight and even with the 3x on the 44 magnum)

I learned to live with tanks to some degree, I play hardcore and use them as cover while behind enemy lines.

Some days are worse than others, we all have bad days where something particular is annoying.

Good luck and have fun.

Platform?

Honestly, this sounds like a classic skill issue. Find a playstyle you like and learn how to use it. If you keep getting annoyed by snipers, campers, tanks, jets, helis, M320s, or whatever else, learn how to counter them instead of blaming the game for allowing people to use them. BF4 gives you plenty of tools to deal with all of these things.

U just gotta figure out how and when to play each class

I have no map knowledge and thats bugging me a lot

I feel like that's one of the problems of this game.
The vehicles make more than half of the lobby become engineers and that just sucks because you get no heals or ammo for the rest of the game, and if you become them you just have to accept that 70% of your deaths will be by vehicles

It gets to a point that today I got a 56-30 kill game with the M416 on zavod, I recall more than half of my deaths being by vehicles

counter them consists of literally getting a squad put together to kill.
Trust me most of the time you aren't killing a level 140 going 51-0 with a tank alone

Well, that really can only be solved by playing the game. Not just in BF but literally in all the games out there.

Look up Martincitopants's BF 4 tactic tier liest video. The video itself is entertaining, well, for me at least, and the tectics are fun when deployed. Especially the "jeep stuff" and going for meele kills.