Alternative Apps(tores): Living without Google (FP1)

Same question here: I want to start using sth like instagram for photos, but apparently I can only do so from my phone (not from computer), and then I would need the guglplaystore.
It does not have to be instagram, I just need some sort of app, where I can easily upload and manage photos.
And of course without gugl interference. :sunglasses:
Any suggestions?
Thank youse!