That's what 2 years of being locked up does to us. You just need a bit of training to get back into that convention-shape again :)

Don't you know what happens to people asking such questions? (If not, ask Sue)

If you are looking for a simple and free editor, I like Paint.net. (Not to be confused with Paint. They have both a free and a paid version. Same program, paid one is just to support them). Gimp is also free and a bit more fully featured, but also more complex to work with.

(My personal image editor of choice is Paint Shop Pro 7, but that is over 20 years old, so probably not where you should start out today. It is only slightly newer than my image viewer of Choice, ACDSee 2.42 from 1999. I teach university level students younger than some of the software I use)

Did he look in the cat bed? Cats steal things all the time. Good place to find lost items.