fit in
phrasal verb with fit verb uk/fɪt/ usfitting | fitted | US usually fit
to feel you belong to a particular group and are accepted by the other members:
Potential board members need to understand that they must fit in.
fit in with sb How do you think she will fit in with the rest of the staff?
to be suitable or right in a particular situation:
fit in with sth Industry observers believe a sell-off would fit in with the company's new strategy.