Altering multiple files

[SteveB]

Hi all,newbie here. Searched for an answer but quickly became overwhelmed. I took a night lapse that came out ok but I would like to increase the contrast of all the photos before compiling them into a video. I have Elements 2.0 (yeah I'm a dinosaur) but don't want to do several hundred photos one at a time.  Just downloaded Gimp 2.10.14.  Can I do it? and how?  Thanks