how much damage did I really do to myself?

I’ve been drinking and smoking weed relatively heavily for about a year and a half starting when I turned 17. Starting last summer I smoked very heavily going through a cart 1g every few days. That phase lasted about 3 months, and after that I went through a phase of drinking very heavily going through a 50-70 drinks in the form of rum and vodka every week. During this time I was also blacking out very frequently. That phase also lasted about 3 months.

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Even now being a few weeks clean from all alcohol, and 6 months clean from weed, I feel pretty messed up. Like on top of being severely dissociated and depressed, I also just feel straight up stupider. Like I can’t concentrate at all, and I feel almost dyslexic. I forget basic concepts and words for things often, and I feel almost delirious. Even this post was kind of difficult to make.

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Can anyone with similar experience or knowledge tell me how much damage there really is and how permanent it is.?