Like a great many things, it depends. I didn’t like Return at all and would have stopped there, but that was the end anyway for nearly twenty years. More fitting to the question would be the prequels. I saw Phantom, it was stupid, so I bailed on the franchise. It would have been permanent but once Lucas was no longer part of it, I gave it another chance.
I most likely won’t bail again. I’ve given the sequel trilogy a try and haven’t been put off the franchise, regardless of how I felt about either of them. Ron Howard directing Solo is, to me at least, a good sign that it will be worth seeing.
The future Rian trilogy may be another matter entirely. We’ll have to wait and see what he has planned. If the first film, as trailers and leaks come out, seems more of the same (poorly placed humor and silliness), I’ll probably only give them a glance on cable.
For the record, I’m not married to franchises the way some people are. I watch what I like and ignore the rest. I’ll always have Star Wars77 and Rogue One. If they never make anything I like again, it doesn’t affect how I view the two I love. I don’t battle franchises.
My super hero collection is the same way: two Batman films, one Wonder Woman film. WB/DC could make ten more and it won’t affect the three I own and watch.