We have lots of RCTs on mask wearing (mostly in healthcare professionals) and they struggle to find a benefit.
This is false. If you look around and read actual studies, not demand other people to do it for you and not cherry pick garbage studies, you'll find even real life "experiments" of healthcare workers in the US during COVID-19 not wearing masks with rapidly rising number of COVID-19 cases then mandated to wear masks with subsequent rapid drop of cases.
What you won't find though is studies supporting the assertion that sick person wearing a mask protects others, not the wearer. Those are the studies that show little to no benefit and always did actually. You protect others with a mask by not catching the virus yourself, it's a second order effect.