Oh no, if your ears were bleeding five years ago then yup, it's probably physical trauma or hearing damage. Unfortunately there's no cure for hearing loss, tinnitus, hyperacusis, etc. at the moment.

Visit /r/tinnitusresearch for hope though. If everything goes right, we'll probably have legit medical products/etc. for tinnitus (some versions of it), hyperacusis, etc. before or around 2030, lol.

For now, try using parametric EQ to compensate with the channel/hearing imbalance.

IEMs/headphones with PC gaming, squig.link, AutoEQ, parametric EQ: https://www.reddit.com/r/HeadphoneAdvice/comments/11n9l4u/fiio_fh3_for_tarkov/jbm9db1/

You can do (parametric) EQ with $8 Neutron Music Player or UAPP on Android. If on PC, the free (Peace) Equalizer APO. There are free apps on Android(/Apple) that can also do a good enough job, but most of them have those graphics sliders instead of parametric or just plug the numbers in EQ. EQ can also be used to help with channel or ear imbalances.

Definitely book an appointment with your local Ear, Nose, Throat (ENT) doctor as they'll help you figure out your current situation. Make sure to also regularly visit the audiologist/etc. for hearing health testing and also manual earwax removal.

If you have blocked sinuses, Eustachian Tube Dysfunction, etc. then you may have to take anti-allergy (antihistamines/etc.) medicine, do certain exercises with your jaw/ears/etc.

Here's some exercises for Eustachian Tube Dysfunction, et cetera: https://www.youtube.com/watch?v=1-SZ1r1dnho

Info about decibels, hearing health, et cetera here: https://www.reddit.com/r/headphones/comments/11a4cpm/are_few_second_peaks_into_8285_db_still_safe_when/j9riw7q/

If you encounter sudden hearing loss, or random tinnitus/et cetera, maybe go to the ER for the (hearing) steroids: https://www.reddit.com/r/headphones/comments/11m5yc5/hypersensitivity_and_tinnitus_after_96db_sound/jbgt88m/

Here's a bit more info on IEMs, dongles, volume, hearing health, earwax cleaning, et cetera: https://www.reddit.com/r/headphones/comments/ul7gyx/listening_needs_with_sensitive_hearing/i7ty42g/ and https://www.reddit.com/r/HeadphoneAdvice/comments/uk341f/er2se_ear_damage/i7ndank/

Here's more info about hearing health and hearing loss, it's mainly about IEMs, but it applies to headphones too: https://www.reddit.com/r/HeadphoneAdvice/comments/v4uuxx/tinnitus_relapse_with_kz_zsn_pro_xs/ib6kbbm/

Here's what you can maybe do directly with tinnitus intensity (I am not a medical professional so take this with precaution): https://www.reddit.com/r/headphones/comments/ul7gyx/listening_needs_with_sensitive_hearing/i7vodcu/