ᐅ What type of finish is recommended for a garage slab?

Hello everyone,

Our garage has a slab made of plain concrete. My husband rough-planed the surface to smooth it out.
What would be the best finish?
Self-leveling compound and paint?
Two-component floor coating?

Are there any other cost-effective ideas?
How did you seal your garage floor slab?

Thanks and best regards

See also the existing thread https://www.hausbau-forum.de/threads/bodenbelag-fuer-garage-betonboden-fliesen-kunstharz-ausgleichsmasse.45572/