I love rewatching series, but we were supposed to choose ones as if we'd never seen them ... like that first impression and bit of joy/insight/love one has the very first time.
I have Amazon's Firestick and Peacock streaming. Just got done watching the entire series of Law and Order: Criminal Intent. It was awesome! (It had been so long it might as well have been for the first time!)
Peacock is the best for old sitcoms. I think I can get Paramount+ free with my Walmart delivery subscription. They also have good series. :)