Self hosted user friendly chat app for family?

I am looking for a self hosted chat solution I can use with my family. As I will self host it, I do not care about end to end encryption (SSL is fine).

I am currently running conduit with the matrix.org protocol.

Protocol is very complicated (and things like sending messages from a web hook for example is complex). Also, I tried to join federated rooms, but my client (element) just crash. So I don't really care about keeping my server.

I want to change mostly because I don't get mobile push notifications (and some features I want below are missing).

I tried different matrix clients but none are really nice and tick all the boxes, so I don't feel like keeping my server.

I don't care about the protocol, I know XMPP and IRC which are both "OK", but something proprietary but open source would be fine.

On the client side, I have a hard time to find the following features:

required:

- android and linux client

- mobile notifications (on android)

- read receipt

- inline images

- message edit

- message deletion

nice to have:

- easy gif sending (like being able to post a tenor or similar gif)

- stickers

- link preview

I wonder if the collective HN brain has any idea.

Cheers