Everyone knows all the apps on your phone

I still, will never understand the need for native "Apps". To this day, I have never seen an "App" that couldn't simply have been a website/webapp. Most of them would likely be improved by being a webapp.

The only benefits I can see of "Apps", are the developer get's access to private information they really don't need.

Yeah, they get to be on the "App Store". But the "App Store" is a totally unnecessary concept introduced by Apple/Google so they could scrape a huge percentage in sales.

Web browsers have good (not perfect) sandboxing, costs no fees to "submit" and are accessible to everyone on every phone.

I get your point partially. All these apps that companies put out in order to collect and manage shopping tokens or to contact their customer service would have been much better as a website.

However I still do like to have apps on my devices that just work offline, without distributing my data across services I do not control. And I also do not want to depend on a internet connection, when I am anywhere.

I like my offline Osmand/Organic Maps app to show me the trails when I am somewhere in the woods or mountains. I like my apps that instead on using some third party server, connect directly to my other local devices to share data.

IMO all (where possible) apps should be developed offline first, and only require internet when necessary, and those apps that cannot work without internet should be web apps, they do not need to be on my devices.