Thank you all for your help, I found a third fob inside the back lining of the drivers seat. The good news is I now have a third fob I didn't know about.
I bought the truck used about 8 months ago and it only came with one fob, had to go to dealer to have another fob programmed to it, I check in setting and it says I have 3 admin fob for the truck but all I have is 2. I will try the foil hack to see if that works
I have a 2021 F150 that I forgot my key fob at store , came out and got in truck and started the truck up with no fob and drove off to my house, later I was looking for my fob and could not find it, got back in my truck started it up and drove back to store to pick up key fob at lost and found...