rear end thumping noise

This could be a number of things. Does the noise get faster as the speed increases or does it stay consistent? If it increases, it could be a bearing in the rear end, the driveshaft, or a tire.

Is it possible to get a recording of the noise?

It sounds like to me it gets quieter the faster it goes at low speeds it's seems to be louder.

It makes the same sound as if it has a flat tire.

Have you checked the air pressure in the tires and for a flat spot? Has this vehicle been sitting for a while? A thumping noise that gets quieter when getting faster is normally a flat spotted tire. Is there a vibration as well?

Yes, no flat spots on tire and no vibration. checked wheel bearings.

Is it possible to get a recording of this noise? I think hearing it will help identify it.

My bad it does get louder the faster you go feel like drive shaft?

Okay. If it gets faster then clearly it is something spinning that is effected by vehicle speed and not RPM. This means drive shaft, rear end bearings, or a tire.

I would start with inspecting the u joints as that is the most likely on a RWD vehicle like yours. Here is a guide that will help with that:

https://www.2carpros.com/articles/how-u-joints-work

If these check out then the I would move the tires but it sounds like you eliminated a lot of this so a drive shaft is likely.