There are plenty of reasons why one might not like Steam's new library.

Here are some aspects that will lead you to roll
back to the reliable & classic 2010's STEAM UI

• It's slow, each click feels laggy
  
• All my shared libraries got merged with the one I own
  
• There is no way to create libraries without games shared by friends or family
  
• All the free to play games you ever came in contact with but deleted afterwards are now back in your library as it should always had been...
  
• It's incredibly clogged and lacks list for descriptions like older versions

Anyway, I have done a guide that teach how to go
back to the classic Steam UI from 2010's here...



https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2102155664