Does protozoa have flagella?

Yes

A flagellum, also called undulipodium, is a whip-like structure used for locomotion, for feeding or other purposes. Almost all organisms have flagella to include protozoa (at some stage in their lives). We humans have them in our bodies. Even our own spermatozoa can be regarded as flagellates. All these flagella have a similar basic design. flagellum, also called undulipodium, is a whip-like structure used