We have little clue what the Star Wars movies we are getting will actually be about, so they could be anything.
There’s always the possibility we could still get something that roughly approximates a sequel down the line.
If the Star Wars film universe begins to expand in the same way as Marvel’s universe, we could see Qi’ra and Darth Maul or Donald Glover’s Lando Calrissian pop up in another movie down the road.