Fitting in is aimed at a specific group in a specific season, and both of those change faster than the choice does. The friends move on, the style shifts, and you are left holding a decision built for conditions that no longer exist. Nobody is at fault for that. It is just what borrowed reasons do.

Before something semi-permanent, ask whether you would still want it if nobody you currently know were around. If the honest answer is no, wait a season. Anything that survives a season was probably yours.