How can I group "same domain" sources in Google Analytics 4?

I want to group the "sources" that come from the same domain into a single source. I want to collapse Instagram and Facebook (for example) into single lines (current state in image below). I know how this can be done in UA (https://www.lovesdata.com/blog/facebook-referrals-in-google-analytics), but the same method is not possible in GA4.

See image of current state here