Verb conjugation of "überfallen" in German

I work as an actor in the theater. I have studied English for seven years, French and Spanish for two years. Well, my level of Spanish is too low to have a good conversation, but I understand it.
On the frozen lake, you can skate, but I would never dare it because it is far too dangerous. Who knows how thick the ice really is and how accurate the measurements are. It can break.
To answer your question I'm a college teacher but I am working now for a real estate agency. I'm also responsible for the finances. It's a very lucrative business but I hate it, most of the time.