Try Zoom! We used it for the last 6 weeks of school and it worked really well both for teachers meetings and for teaching my classes. Zoom services were free during the pandemic. I'm not sure what they are doing now. I used the whiteboard on it and it works well. There's also a function that allows you to share whatever you want from your desktop with the others in your meeting, so you can show PowerPoint or whatever you want. You can allow (or not allow) others to do the same. You can break your students into groups and they can work independently with just the other group members. It would also work for students to do "live" performances this way. You will need to make sure that your settings are very exclusive, so you don't have unwanted people popping in and doing things they shouldn't, as well as limiting what your students can do. We found it to work really well for us. As a side note: I used Flipgrid for the students to film their performances and share them with the others in the class. Students can film themselves either on Flipgrid or their iPhones and then submit. This gives hem the opportunity to film, refill, edit, whatever they want before submission. Then others in the class can watch the finished product and leave comments (also filmed) for each other. I found this an excellent way for them to continue to have the interaction that was missing from the classroom setting. Hope this helps!