Consider reaching out to Chris from cryptoguide.tips -> https://cryptoguide.tips/recovery-services-consultations/
I've never heard anything bad about him.

This dude has this YT channel, and has lots of useful videoes of using btcrecover -> https://www.youtube.com/@CryptoGuide

If you prefer to still give it a go yourself, take a look at these pages:
https://btcrecover.readthedocs.io/en/latest/