It’s not a stupid question at all, because lots of the notes are played on the offbeat ,that’s what gives the Bassline a different feel , you will also play pickup notes which are notes before the 1 if you are counting 1,2,3,4 . A good tune to practice getting the timing is Stir it up , Bob Marley . IMO Robbie Shakespeare is one of the best reggae bass players ever 😀. Also on YouTube Alain m has some great basslines