Surveillance Self-Defense:Re:
https://ssd.eff.org/en/playlist/privacy-breakdown-mobile-phonesI for instance for quite some time now am using Blokada5 app on Google Android,
(app is available via the Aptoide webshop) to keep all sorts of unwanted ads and tracking at bay.
You can install various blocklists with Blokada5.
polonus (volunteer 3rd party cold recon website security analyst and website error-hunter)