Excel Keyword Search and then insert 3 cell

[Jersey22]

Hi,
Normally on excel I can press ctrl+g and it will look for all blank cells and I can insert cells.

Is there a way to do the same but instead of looking for blanks, I want to search for a keyword such as average and then insert 3 cells in front of it.

I tried the filter option but I couldn't insert cell, only rows and columns is allowed.

Is there a formula or script for this?

Thanks!