Agreed with what a lot of folks have said... just adding a few more random cents...
It goes without saying, but everyone loses sometimes to crap we know we shouldn't lose to. You know it's coming, you know how to beat it... but sometimes it still doesn't work out in your favor. A bad connection, a few unlucky reads, a few whiffed hitboxes, a little distraction or fatigue, and you lose the match.
It's frustrating af, but obviously it's best to accept that this particular match went south, learn what you can from it, and move on. It's not a great mindset to get into if you start saying, "That player was garbage, and I only lost because their character has broken shit that carries." That's creating this idea that certain characters have permanent unfair advantages that your skill can't reasonably overcome. And so it's giving up on the belief that you can to learn to adapt and better control the match next time.
Not at all saying there's no broken, stupid shit out there--of course there is. Just saying we need to believe in our ability to level up and learn to deal with it. If we say it's NRS's fault, they need to fix it and there's nothing we can do, that keeps us stuck in place (and endlessly salty about it).