Sir i'm using zara theme and here i want to modify the things so that it could shows the seller name on link instead of profile number in the link.

For ex. https://merowish.com/user/profile/9912

This is one seller's profile in my website.. and on the link there displays the number of profile but i need to have there seller name text on that link of any seller the name or username will show on link.

Please help me.

You have to check it at osclass:

https://forums.osclass.org/3-5-x/how-to-display-seller's-name-as-a-link/

By the way, you have 2 rows of ads on mobile.
I have only 1.

How did you do that?