I use Bisq and Robosats exclusively to accumulate bitcoin via fiat selling. I've been leaning more towards Robosats lately though, because on the high on chain fees (Bisq doesn't support lightning). I'm in Canada, and the CAD liquidity is horrible compared to USD and EUR; it's pretty clear from the currency breakdown in your post. I typically make a buy when I see an offer within 3% above market. Or if I really want to get some sats, I would post an offer to buy.

A resource that I found useful would be Privacy tools and if you have the technical skills self hosting apps is powerful. A good thing to get started with is obviously a bitcoin node :-) a good second would be something like a private Nextcloud on a VPS so you don't have to rely on Google/Apple cloud.

My experience so far has been that there is not a singular thing you can turn on for privacy. It's more of an awareness of how we are exploited and mass surveilled by big tech/government in a digital society. There are always things to improve for anyone that cares about privacy, and many things come down to trade offs.