Focus on the pronunciation of fit in
English definition of “fit in”
fit in — Phrasal Verb with fit
/fɪt/ verb (fitting, 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.