I have not visited the site for a long time, but now I decided to do it again. And I wanted to look at my comments that I wrote earlier. But there's no way I can do it. Is there such a possibility?

No.
At least not atm

note: You can manually check your comments if you remember where (feed/title page/forum etc.) you made them or notifications (from comment replies) you received before. Otherwise, mdl doesn't have a service to track your old comments.

I wish.  Seems like a glaring oversight by this website, really.

This feature should definitely be added in!

Right now this are just  suggestions and has not been implemented. If you want to give your comment or vote on this......!

Comment History 

option to star comment 

I get notif8cations of reply to a comment t and can't find the comment or the reply seems a bit weak. 

 Kpaneno:

I get notif8cations of reply to a comment t and can't find the comment or the reply seems a bit weak. 

May be your comment is under someone comment who blocked you . That's why when someone reply to your comment you can't reach. 

Or 

Someone reply then instantly deleted it 

Visit here https://mydramalist.com/discussions/suggestions/109381-delete-block

Oh thank you kinda weird someone would reply then block you as you will never see the reply.