iOS making a random app on my phone the default ‘Open with’ in Files instead of opening quickly in Preview.

Recently was trying to open images in Files and it kept opening in my Canon print app. Thought it was a glitch so I just deleted the Canon print app.

Tried opening the file again and it opened in Copilot. Figured out I had to change ‘open with’ to Preview. Copilot is still set as the default. I’m sure I can change it somewhere but why is that the default in the first place?