Today i tried to use the RSS to ActivityPub converter ( https://bots.tinysubversions.com/convert/ ) and i love it!
It creates an handle to follow with your account, you just have to choose its name. So far i added:
@INGV_Terremoti Earthquakes (mainly italians plus the most important over the world)
@ANSA_Homepage Italian news from ansa.it
@ANSA_English same as the previous but in english