Best/safest Cardano passive income?

Hi all,

Ive been invested in cardano now since early 2018 and been staking for the past couple of years. Im looking for options to make passive income on top of my staking rewards.

Ive been doing a bit of reading about yield farming, peer to peer lending. still getting my head around that stuff and how to do it/what it is, but open to other options.

I have quite a substantial amount of ada so would ideally like a very safe option, and if you can even recommend any good youtubers that have these kinds of videos to guide me through it, id be very grateful!