Creating a plane in Edit Mode Does someone know how to do this?

I read a comment saying “Create a plane in Edit Mode ALT + M Center. Activate magnet + vertex +closest. Extrude dot .” but I'm confused because I'm a newbie
The easiest way is to activate the selection of edges, select 2 or more edges where you want to fill with a face and press


CTRL + E
select bridge edge loop


You can also do this by selecting edges and filling by pressing F