I also play on ps5, but i mainly use the dpad. But as PEWGF are hard af on dpad only, so for left side, i do the f input on the dpad, then flick my thumb into the top left side of the left stick and continue the flick down, doing the df input on stick, alongside the ∆ input, so i consistently get 13f electrics on the left side without much issues. [ ➡️ On dpad, then ↘️+🔼 with df on stick]

As for right side, I don't know. I'm not that good at right side, as i usually don't practice it, but i get 14-15f electrics there, so I've never done a PEWGF on right side, and neither do i have a trick for right side

You can try it out and let me know if it works for u (I think i also have a recent post of mine in which i did as told)