Has my phone been hacked?

Over the last few days I’ve had some weird issues with my iPhone XR touchscreen. Sometimes it swipes and clicks on it’s own. It doesn’t do anything weird like delete apps or send messages or something like that, and it’s only when I’m actively using my phone that it does this. I’ve already left my phone unlocked and on for an hour to see if it does anything, but nothing happens, so it’s only when I’m actively using the screen. One thing that was really weird to me was when I started researching it. I went to safari and googled ghost touch, and when I was reading an article about it it just switched to another website, as if it didn’t want me to read about ghost touch. It didn’t switch to a weird website though, just one of a local store I trust and visit often, it’s in my safari favourites. but when that happened I got so scared I factory reset my phone. I don’t think this can be a hacker but I’m not sure. Please help.