It’s really wild. Even in my own life we watched each of the first six seasons over and over while waiting for new ones. By the end of it I felt no need. I barely remember how it ended and have no desire to watch it. Kind of sucks, I think I’m right in that age bracket that it was a big deal for. No lasting impact. Like Avatar
I think you need to do some more reading. But you’ll do fastboot unlock ( enable unlock in developer settings) then adb to install your recovery (twrp or whatever for that version) then flash your rom.