How can I change multiple titles on Final Cut Pro?

so I put several titles, I cut them and then I realized that I would like to change their font a little and put them below, I try to select them all and it doesn't work, I can only change one, I said to copy the attributes, but in the video when I want to change it, I also change the video image in the background, I searched for a lot of tutorials without any answer, I'm starting to regret buying something like this, if there's no way to change a bunch of text, what can I say when I get to more complicated stuff?

[Re-Titled by Moderator]

Original Title: how i can change multiple titles