If I got antibiotics earlier I wouldn't have tinnitus for the rest of my life

I think one day I had a headache so I stood in the rain to cool down my head for a long time and turned my ear towards the sky. I got really soaked and I think the rain water got in my ear. After this I think was probably when my tinnitus in one ear started. It didn't hurt but I think I had an infection in my ear from bacteria. I waited too long to use antibiotics for it so the tinnitus is permanent.

I think if I hadn't waited or I didn't stand in the rain I wouldn't be living with tinnitus now. I have so much regret and feel really demotivated and depressed. Is there anything anyone can say to help cope with this regret and unsettledness? :( I've made lots of really bad mistakes and I wish I could go back in time because they weigh on me so much and I feel like I don't want to be living some days.