My last comment wasn’t really addressed personally to you, sorry i sounded like that
Having root is almost never a security benefit, it allows you to close one hole, but opens up 10 new more
It means you have your bootloader unlocked, you have secure boot disabled which allows for persistent malware. Just having root by itself opens up many more remote, zero click, or just very dangerous exploits
F-droid is not secure, some of the issues had been resolved, but it’s still not recommended for best practices
Of course, everything depends on the thread model
I personally really like fdroid and izzy, and other custom repos. And root is a cool thing, although i don’t have it on my daily driver(but have on my test phone)