Games feel more frustrating/less enjoyable

Anyone else feeling this way? I've been playing pretty consistently since S2. I play casually with friends a few nights a week, and a lot of games kind of feel like shit these days. I'm very frequently playing against hypertanks/champs that don't die (Mundo, Darius, Ornn), hypercarries/assassins (Zed, Qiyana, Yi, Pyke, Fizz), or champs that have some sort of all-in mentality. It's exhausting, and not that fun to play against over and over.

In general I feel like my mental is pretty good, I don't tilt easily and I can take most losses fine and move on. But lately I just feel a bit more frustrated with some of my games than I have in the past years. I'm very frequently in situations where I feel like I really can't do anything to turn a game around. And I definitely do try to turn games around -- I'm not the guy that surrenders and gives up at 15.

Anyway, sort of venting, but also curious if anyone else feels this way, or if it's just some bad luck on my end...? Champ selection/diversity just feels way more toxic these days. Not saying I believe Riot should, or even can, do anything about this. But just expressing my feelings on the current state of the game, from a casual player's POV.

Cheers.