Download issues

i am eager to get started with unity, but after cheering my dying computer on through the grueling download of the unity 2021 editor, it hit me in the face with a validation error. i do not know what that means, and it also keeps saying i dont have an active lisence... setting up unity can be REALLY confusing at times, but this time im trully stuck. someone plz tell me what is happening!

 

i figured out how to get a lisence but i said "free personal plan" clicked confirm, it loaded for 30 seconds, then said it was failed and i need to sign in and/or connect to internet. well, im signed in, and by the fact this is an online post im making, im guessing i have internet connection. really getting annoyed at this point (mostly at my slow computer, not unity)...