There is no “algorithm” on Lemmy. One of the reasons why I like it. No tracking in the typical sense. Simply subscribe to communities which you want to see, then browse “Subscribed”. Alternatively, some people like to browse “All” and block any content they do not wish to see. Me personally, a mixture of both. Every now and then I scroll “All” to find new communities to subscribe to. Hope this helps :D.
Sean Killian’s vocals from Vio-lence.