This is a community forum, nobody here is from Steam. You will need to contact Steam Support directly regarding this request which can by done by going to the below link.

https://psteamhelp.yuanyoumao.com/en/wizard/HelpWithSteamIssue/?issueid=809

Although, this request sounds a little bit shady.

引用自 хочу выстрел：

Hello, I would like to remove the Steam Guard because I no longer have access to my old phone number, but I do have access to my email. Please remove the Steam Guard so that I can log in to my account using my email.

You don't need help to manage your own account if you haven't sabotaged yourself.

If you have, make a support ticket, instead of posting on random forums because you've convinced yourself support scours the forums for helpless and clueless users.

As a side note, ANYONE trying to friend you and telling you they are from Steam support to help you with your account issue is a SCAMMER.

If you have recovery code, use it to remove it, otherwise contact support only they can remove it.

This is a user forum, not customer service, support only do tickets you make, which you have to go to steam help page > my account > data related to my account scroll down to the bottom and you see contact support.