I have 1997 Honda accord Sedan LX

I have changed the rear Wheel Bearing twice

and at around a speed of 40-80 their is a bump feel on the rear....it feels like im hitting a bump on the road in the rear and a slight wobble

It tends to get faster on higher speed but the sound get like low but echos but it has this slight wobble.

Could it be brakes relate? Lower Control arm ? Only wear i see is the bushing for the rear rear shock tower.. but would this cause a bump one the tire rotates to certain point? Rear drum warp?? (never heard of this but yea) ? tire problem even tho they are new tires?

any ideas would be great thank you