As far as I know, Sentry is not harmful. If you wanna get rid of Mozilla Telemetry, use Brave (chromium) or IronFox (Firefox fork) instead of Firefox or you could also manually turn the telemetry off in Firefox settings. Get rid of the apps with Google trackers. And if you can’t get rid of the apps with the Google trackers, last resort is to use those apps in a work profile using Island, Shelter etc. I personally don’t like and use Rethink DNS because it reduces my internet speed a lot. I would rather suggest NextDNS and this NextDNS setup guide. In the case of ACRA, I’m less familiar with it, so I looked it up and apparently, ACRA itself is not inherently invasive, but its use in apps without proper transparency or user consent can lead to privacy-invasive behavior.

And enlighten me on what app you’re using to see those trackers. As for me, I use Warden