EndeavourOS keeps freezing every 20-30 minutes

Your second link you shared there (for inxi) failed. I suspect the inxi command had an error. That information may still be useful.

ene 06 19:12:28 daniel-f0em0027ld kernel: [drm:amdgpu_dm_atomic_check [amdgpu]] *ERROR* [CRTC:73:crtc-0] hw_done or flip_done timed out
ene 06 19:12:38 daniel-f0em0027ld kernel: [drm:amdgpu_dm_atomic_check [amdgpu]] *ERROR* [CRTC:77:crtc-1] hw_done or flip_done timed out

There are reported issues (eg: here and here) with AMD GPU’s and mesa version 24.3.x.

You might try downgrading mesa to version 24.2.7 and see if that resolves the issue.

sudo downgrade mesa

Then select the number corresponding with version 24.2.7 from the list, to downgrade it.