External Editor Options (Not Adobe or PL)

Hi, I just purchased PR without checking if it would work as a plugin for Affinity Photo but alas I made a mistake so is there another program that PR will work with as a plugin and doesn’t cost the earth (On a pension) I tried On1 but never managed to get it to work smoothly (Win 11, 32GB ram, etc etc.) Adobe P/S far to much in there to do this and that, I only photograph birds so don’t need sky replacement or any other fancy stuff just something along the lines of Affinity Photo. Thank You, Russ.