Jitsi Meet is a reliable Open Source platform for video conferencing. It is developed based on the WebRTC standard. This technology is also used by similar platforms like Zoom or Google Hangouts.
Jitsi Meet by Oblak.be
You can use the service without creating an account, you only need to choose a unique name for your room and share the link with your friends.
You can set a meeting password, enable a "waiting room" and make use of screensharing during the meeting.
You can start a meeting using the widget on this page, or via the link meet.oblak.be"
Links
Official Jitsi website