Anyone know how to file an eviction in Harris County without getting a lawyer?

I’m not even sure if you would call these people tenants or trespassers since they technically never signed a lease agreement with me. I “went away” in 2019 and when I got out in June some people were living in my house! Been there for over 2 years!! They said they “bought” the house from this other dude. But this dude never owned it to sell to them. They basically got scammed.

I filed a police report last month but it still hasn’t been assigned to an officer. I don’t have money for a lawyer but I want to get these people out of my place.