Pathfinder 2e Character Discussion

In the Pathfinder Society I'd like to create a Fighter (using Pathbuilder 2E) that's good at grappling creatures. But there seems to be so many ways of doing this.

It seems like taking Monk/Wrestler as a L2 Archetype Dedication would be advantageous, but since I've never played a pure Fighter I'm not sure if their feats would accomplish the same thing without the overhead. (It's PFS so no Free Archetype.)

I want a character that does good to great, consistent damage (hence Fighter as base class), with the ability to pin down a tough opponent to make them flat-footed, so others can land hits easier.