Pi-Hole is just one step in multiple layers when it comes to protecting yourself; I'd say it's main benefit is twofold; ad-blocking, and related benefits, and secondly script/malware blocking.
If also recommend browser based blockers for desktop and mobile, uBlock Origin bring the best in my opinion and couple that with others as required.
Find and use a few different upstream, privacy conscious and providers. I'm not convinced of the efficacy of paid VPNs, but by all means obtain and use one under your own control for when you're out and about on "hostile" (read; not home) networks.
If also recommend browser based blockers for desktop and mobile, uBlock Origin bring the best in my opinion and couple that with others as required.
Find and use a few different upstream, privacy conscious and providers. I'm not convinced of the efficacy of paid VPNs, but by all means obtain and use one under your own control for when you're out and about on "hostile" (read; not home) networks.