software recommendations for live interactive online lessons

I've conducted brick & mortar lessons until the pandemic shut me down. My investigation into live interactive lessons over the Internet has not been very fruitful. I like the features of Zoom, but the 40 minute limit (which many other apps also have) is a problem. Skype's desktop sharing is primitive to the point of being unusable. I'm not looking to be a streamer, I'm just interested in one on one lessons. My criteria:

1. Free.
2. At least a 60 minute limit.
3. Intuitive and convenient sharing of desktop/window.

Thanks for your suggestions.

UPDATE: Apparently Zoom's 40 minute limit does *not* apply to 1:1 meetings. Can someone confirm?

i like Teams for my lessons, before that i used Zoom.

Do you mean Microsoft Teams? The free version of that has a 45 minute limit.

For my chess lessons i use Zoom (the best option for me and no limits for 1:1 lessons), sometimes skype or google hangouts

I use Skype and Zoom for chess teaching. There are no time limits for me, both of them are totally fine and usable.

I've had lessons with Skype and it was fine. Screen share wasn't used - we both logged on to another chess site and used the study feature.