HayiWena, 
Want a[n 81-pg] rigorous academic source that recommends protected roundabouts in the US? PDF download link: https://nationalacademies.us10.list-manage.com/track/click?u=4f1f5aad1cdf8802c08a457cb&id=4aade31cda&e=77d1b86ef3 (includes email list tracking garage because the direct link is hidden) or try searching for report # MPC-603, Investigating Bicyclist Safety Perceptions and Behaviors at Roundabouts (March 2024) from University of UT at Logan.
