minecraft launcher installer for windows 10 stuck on making things awesome screen and windows 7/8 so laggy i cant use

so basically ive paid for minecraft java edition on my windows 10 computer, and when i tried to download it the installer launcher thing is stuck on the making things awesome screen thing and wont do anything. after doing research I tried to download windows 7/8 java version and it all worked fine but when i tried to play it was so laggy it was impossible to play so can you help fix either of them or give me my money back please ahha