Not a direct Mac Music q but related

I've got to edit a load of band photo's and videos for album artwork, uploads, and archival, and really not sure what app to go for.
I've had a look at a lot of online reviews and have downloaded Snapseed, Retouch, Photo Editor which are ok but very basic, so thinking it might be worth biting the bullet and go for an annual plan with Adobe Photo Express or something similar though I think Adobe Photoshop might be overkill.
For movies I'm working through an iMovie tutorial to see how that works but any other suggestions wold be welcome.
I'd like to do this all on my 11" iPad Pro as it can handle the load and I can do this away from my music iMac too.
I'm good with working through tutorials etc., but Photoshop is on another level I don't think I really want to go to!
Does anyone have any experience of doing this type of work and what they recommend?
Thanks!