Pls help. I need an software to edit photos quickly

Sorry if i post this thread in wrong box. i'm really in need for such a software.
I installed Photoshop on my PC. It's pretty good but i find it too complicated to add some effect on pictures. I'm looking for some software/app that help me edit photo fast and add some cute stickers/effect or draw something lovely directly on image. I'm really in need. I want to make around 100 photo gifts to give to my colleagues for this Christmas (i'm the youngest one in my company so i have to take this duty). I guess i don't have much time to follow so many steps on Photoshop like i often do. Many thanks in advance.

PicMonkey? https://www.picmonkey.com/blog/picmonkey-tutorials

Never tried that kind of thing, but http://www.faststone.org/FSViewerDetail.htm
may be able to do it.
Switched to Faststone Image Viewer years ago

GIMP, yes it is free, has a learning curve , a serious one at that.

Here is something new for me thnx borh of you i have learnt two new different ideas....

I am professional graphic designer and as per my recommendations use KrojamSoft PhotoViewerPro as it has tremendous features along with editing options.

Pixlr.com is good cloud based software for photo editing

You can use Corel paintshop pro 2018 for quick photo editing