Hi! I have a problem with the bass. There’s a lot of bass in the room and I want to improve the acoustics. I'm a beginner. What is a good bass trap? What kind of bass trap do you offer?

Heya. Penjo sent you good link.

You need these things in your room:
Absorbtion
Disperion
Multiple sources
Processing

With these elements, you will get better sound in room.
I also suggest AVSforums and diyaudio, as these people really work these issues on daily basis.