[Client Bug] Username/Password Error

I'm on the new mac laptop and on the new client. It has been nothing but bugs with this. I'm on my 4th leaver buster for things out of my control. Random FPS spikes when my internet is fine and cannot reconnect. Then the latest a game just froze had to restart client legit couldn't log in using my correct details trust me I know them i've wrote them in 484 times before. Then I change my password thinking i've been hacked only to come back to client with same wrong username/password. When on the forums it worked fine. The only thing that fixed this was changing server to oceania and back again.

Why am I being punished for something in riots code it makes 0 sense? I've written a support ticket, but expect some bs that we are looking into it enjoy your leaverbuster you pleb scum.