After downloading and running the new minecraft launcher, I try to login with one of the 2 given options: Microsoft account or Mojang account. When I choose Microsoft account on the screen appears a loading animation followed by an immediate crash. This happens consistently. I have tried restarting, re-downloading, but nothing fixes this crashing issue... There is no information after crashing.

Also, I deleted the old minecraft launcher and now I can't play the game without it, is there any way I can download the old launcher?