Just Got A MBP Mid-2012. What OS is reccomended to Install?

Hello, r/OpenCoreLegacyPatcher!

I just got my first ever MacBook Pro. It has a 8GB Stick of RAM and a 500GB SSD and it is installed with MacOS Mojave (Ver. 10.14.2) on it. I am sort of new to the Apple UX/UI and all as I mostly use Windows Computers (7-11). I just want to use it as sort of a fun daily-driver to take wherever I travel! I have heard about OCLP before, and I want to give it a try on my MBP. I just have few questions about it:

1. Which OS install would be recommended to install on this machine? I've seen people installing Ventura, Sonoma, Monterey etc, but by reading this subreddit for a bit I've seen more recommendations for Monterey. (Credits to u/fckns)
2. What about security patches? Does OpenCore Post-Install Root Patcher takes care of it? Also, I read that automatic updating needs to be turned off. I guess it is to not to break the OS install with OC Legacy Patcher? (Credits to u/fckns)
3. I do not want to break this computer as this is the only Macbook and first Macbook I ever got. I'm scared to even installing Catalina as it might slow down the computer.
4. Are there any apps to install as Mojave is very out of date.
5. Why does my CD/DVD Drive spit out the disc a few secs after i put it inside?

I think that's it from me. If there is anything I need to know please let me know. I know i could've just asked ChatGPT but I want actual human answers from people who've actually experienced using MacOS. Thanks in advance!

Credits to u/fckns for using his post as a Template.

https://preview.redd.it/cn1uiafwundg1.png?width=588&format=png&auto=webp&s=8624308317fc47404babda46bd42e76fb382be43