Lost recovery mobile no

Hello,

This is anjum
Actually I created 1 Gmail account in 2012 ***@*** with recovery e-mail I'd ***@*** and recovery mobile no <removed by moderator>

But I lost that mobile no but i have my activate Gmail account ***@*** and still using that account

But from many years I didn't open that mail I'd now I want to open ***@*** mail but I didn't

So plz help me