verb/tʁu.ve ʃo.syʁ a sɔ̃ pje/
to find what one is looking for, to find what one wants, to find the right fit for one, to find one's heart's desire; to find one's special someone, to find the right person, to find the one; to find a suitable match
“Tout le monde finit par trouver chaussure à son pied.” — There's a lid for every pot.
Synonyms: trouver son bonheur, trouver l'âme sœur, trouver la perle rare, trouver l'amour
Literally, “to find a shoe for one's foot / that fits one's foot”.