>>4290245If you're just adapting to mirrorless with no plans to use it on an actual LTM camera, my personal weapon of choice is the Rikenon 55/1.4, got one free with a Ricoh TLS401 I did a CLA on, then had to do the CLA on the lens too. Optically it is very good and wide open its soft in all the right places.
The problem is, almost every single lens made before the advent of C41 film is going to be single coat and optimized for black and white film.
You're not going to find anything really decent under 50 bucks because clout chasers and YT gear jews have driven up the prices on almost everything in the name of views and subscibes. The Rikenon can be found cheap because it's not a Zeiss Pancolar or an 8-element Super-Tak.
Color can be done in Lightroom. Here's some Jupiter 3 50/1.5 on C41 Superia