I am really hoping you spoke to your doctor about this. Tubes generally improve things as they remove the excess fluid build up from chronic ear aches and that fluid can lead to hearing loss. But this opposite effect is troubling. Have they checked to make sure the tubes are not blocked for some reason with blood, mucus or something else?
Since you are an adult, you did this for eustachian tube dysfunction? I have eustachian tube dysfunction too. I have had intermittent hearing difficulty, more like not hearing well rather than loss of hearing and mostly just on one side. Super irritating. The vertigo is horrible for me when it flares. Did you have that? Hearing loss for children is pretty rare.
Here is an older post. https://www.medhelp.org/posts/Ear--Nose--Throat/Diminished-hearing-after-ear-tube-procedure-in-adult/show/669985
If it were me, I'd inquire about removing them asking your doctor if that could improve the hearing. This is most unfortunate. I'm glad I found this thread though so I was never tempted to get tubes!