I went with ntfy.sh and installed molly and mercurygram.

Thanks for your awesome advice.

So it’s either a persistent notification or allowing the app to constantly running in the background. Does it have a significant battery impact?

You’re right I need reliable notifications for Telegram and signal

Ok thanks. I misunderstood this option imagine you have a directory with thousands of image files you don’t want to see in gallery app. What would be best solution?

Settings>privacy>hidden items

So it needed internet access?