SOMETHING IS GOING ON WITH MY MINECRAFT ACCOUNT

My minecraft account for one reason isn't working anymore.One day I opened my launcher and when I wrote my e-mail and my password I couldn't login.i thought someone hacked it so I went to my inbox to change the settings of my account.when I wrote my new password when i tried again I couldn't login again so I changed my e-mail too but nothing happened.can you please tell me if you know what's the problem(and warn me if this page https://mcleaks.net/ is dangerous for minecraft because if it is i think my account gone ).