Microsoft Teams Screen Share Not Connecting

I have scoured the internet for a solution to my screen share issue, but have resorted to posting here:

I cannot even start to screen share without creating a call first which is what I am trying to avoid by sharing my screen (Sharing my screen is optional for the receiver who can flick into it at will rather than having to be in a call constantly and muting teams to avoid disturbance).

It does not even connect, I have the black bar at the top with the 'Stop Sharing' red button, but the white text to the left of it says 'Connecting . . .' and then closes a few seconds later to no anvil

I would really like to fix this issue as my school has given me access to teams and encourages us to use this, however discord seems to do just that aspect of teams better than teams (or at all) at least for me. I have cleared my cache, signed out, restarted about a million and pi times (the issue has been persistent for many weeks) and only have my personal windows 10 surface laptop to use/test this problem with

I have also checked firewall, privacy settings, my anti-malware (Trend Micro), and checked for updates a thousand and -1 times. What can I do!