ETD for more than 3 years PLEASE HELP ME

I have chronic eustachian tube dysfunction after an accident to my left side of face 3 year ago which caused perforation of my ear drum and infection. At that time doctor gave me antibiotics which cleared my ear infection but the pressure and clogged feeling, crackling while swallowing and a slight burning pain around the ear never gone. I have visited many ENTs till date, lots of Antihistamines (fexofenadine, levocetirizine, montelukast etc), steroid nasal spray (Fluticasone, Mometasone), daily steam inhalation, valsalva maneuver.. But still no improvement. I have slight DNS and Bilateral Inferior turbinate hypertrophy as per CT PNS and Nasal Endoscopy. Dr did some hearing test in 2021 which all came normal and Type "A" tympanogram. At first the problem was only limited to my left ear. But now it is both ear. Recently tinnitus has also started. All these issue is making my daily life horrible. It's also affecting my mental health badly. I just want get rid of it. PLEASE HELP ME!