I lost my phone which had my another Samsung account

[Members_1RQhjL4]

So I lost my previous which contained my another samsung account and now I don't have that number while I tried logging in that account its asking me 2 factor authentication so what should I do now

[mkg]

Block that number, do a general diary, and if possible trace with find my mobile.

[mkg]

Any back up email provided

[Sayan_SS_]

Did You Have Turn on Find My Device?