I think you're cooking to a partial extent.
If you're level 100-300, complaining all the time about your teammates, and still iron/bronze, then yeah might as well stop wasting time on a game you aren't good at/aren't enjoying.
If you're somewhat new to fps game/Valorant, and get stuck in a lower rank for a while, I think it's alright to continue playing. Ranks like Iron and Bronze are excellent for building up your basic skills, but are quite difficult to get out of (smurfs etc). But I don't think it's too much of an issue, especially if you're having fun. Some caterpillars take longer in the coccoon phase than others.
Ultimately, games exist to bring fun and entertainment to people, and I think that if you, regardless of rank, genuinely dislike playing the game, be it due to teammates or your own personal skill or whatever, then just stop playing.
When I started playing I was stuck in Silver for a long, long time. I took my time learning my basic mechanics and by the time I got out of Silver, I was riding the high tides of ranking up. But of course, everyone is different.