Camera will not work while using teams

I bought a laptop for work and the camera works in every other app and website I've used it on but it will not work in Teams. I have checked every setting, reinstalled the drivers, made sure all other programmes using the camera were closed but nothing has helped. There is only one camera installed on this computer and it has been selected, but I have the grey box of death in the settings - the camera says it's connected but there is no picture.

I've also spoke to multiple Microsoft support agents who have tried various things but all ultimately said they'd need to send me to a different support agent for help, only for the last one I spoke to to tell me that they don't know why it was escalated to them as they don't work with the Teams application??? The last guy suggested I post here and ask for help. Please, if anyone has any ideas how to fix this as I need this for work, please let me know.