MacBook Pro 2015 on macOS 12.7.6, should I upgrade with OCLP and what is the best version for my machine considering the best performance, stability and battery?

MacBook Pro (Retina, 15-inch, Mid 2015) Processor- 2,2 GHz Quad-Core Intel Core i7
Memory- 16 GB 1600 MHz DDR3 Graphics- Intel Iris Pro 1536 MB

PS- This is my daily driver and I am constantly bugged with new app which does not run on macos 12 anymore but at the same time I am worried about the battery life and performance which is still great on this version. Do I have to make trade off with performance, battery and stability for newer version of macos?