Well if you aren’t doing a Thanksgiving username (like me) you won’t have a problem.
I first started not doing a Thanksgiving name last year because a troll stole one of my usernames in 2021 when I did that. Like I said, if you only change it those two times you won’t have a problem. Nobody can use your previous username for 30 days, so when you change it during Halloween you’ll be fine. You can change it back for November, and then in December use the Festive_ or whatever you want username. You can still change it back in January.