I think this is the answer. Thanks for your recommendation. I'll test this out soon. It seems to check all the boxes and I found this website providing good reasons to use it.

The reasons I prefer Jitsi Meet to Zoom include the following:

1. no subscriptions are required to use all the features of Jitsi Meet;
2. unlike Zoom, Jitsi Meet does not require you to sign up;
3. unlike Zoom, Jitsi Meet does not require the installation of an application — it runs in Google Chrome or Firefox;
4. unlike the free version of Zoom, Jitsi Meet does not impose a time limit on the length of the meeting;
5. unlike the free version of Zoom, Jitsi Meet does not have a limit on the number of meeting attendees;
6. Jitsi Meet provides end-to-end encryption for one-to-one video calls*;
7. I find the performance of Jitsi Meet better than Zoom, which seems to be corroborated in basic benchmarking by Jitsi Meet’s developers (‘WebRTC vs. Zoom – A Simple Congestion Test‘);
8. I find image quality better in Jitsi Meet;
9. I find Jitsi Meet on a desktop/laptop more intuitive and easier to use than Zoom;
10. if I share audio in Zoom for Linux, the audio is very distorted**;
11. I find the UI of the Jitsi Meet app for Android easy to use (the app can be installed via Google Play);
12. Jitsi Meet is open-source, so anyone can inspect the source code;
13. if I wanted to, I could download the Jitsi software to my own server and set up a Jitsi Meet server to handle meetings instead of using the Cloud server provided by 8×8, Inc. (the company that develops the Jitsi Meetings software).