It’s going to take some time or you can create the community. July 1st just arrived. So people are still trying to figure out what to do about Reddit. Not everyone was going to migrate to Lemmy July 1st when 3PA shut down. It’ll happen over time. In the meantime we can all do our part and contribute to the different communities now and create content so more people will want to join.
Aside from political views, another social network will not help anything and is only another useless app to install.