Get a 15 second video of you pitching with a radar gun in the frame. Send to @flatgroundapp on twitter. Say something like this "2021 RHP 6'3" 165lb in (Cleveland OH etc.) Tops at 84. Looking for chance to prove myself in local area. Suggestions welcome." And then hit the weightroom.
Then follow up on the responses to learn what you can, perhaps get a guest spot for free in local tournaments.