Been playing my mage since vanilla, have raided in many top 100 US guilds. Used to raid with Vulgar back when they were on Dragonmaw. Can’t raid until at least 9pm EST ( I typically get off work at 8:30) Most nights are good except Thursday I play volleyball and may be late some times if you raid that day. All the gear and progression you see from my character have been done using group finder only. I have not been in a guild since the start of the expansion. I wanted to make sure I was going to enjoy this expansion first. If you want to see old logs of mine, you can check BFA/Legion logs on warcraftlogs.
I am also fine with being a back-up raider as long as the guild is high end progression based. Really need a Mythic + / RBG group though.