Forgot everything about apple ID

Hello, 3 years ago I had my first apple ID that worked fine for me but I changed it and created a new one. I forgot password, security questions and even email adress password. Reset iPhone and there is a activation lock on that device. How I am able to get my apple ID? Even when I try to answer the security questions the error windows pops out and nothing happens which I am kinda confident those are correct answers. Can I somehow get that apple ID back because I am not able to activate my iphone right now. Thanks for the help. And sorry for grammar. England is not my city.