These tons of ad blockers do a very poor job actually blocking ads in Safari, unfortunately. I run AdGuard and any time I’m out of my PiHole’s range it’s all a crapfest of ads.
Similar here. Have 1Blocker, Better, Purify, and the Firefox Focus Safari extension and between those I rarely see ads. Compared to Firefox with uBlock Origin on my Windows machines I’d say the experience is about 98-99% as good.