This is something I want to do as well. Fortunately, i don't get harassed for taking pictures it's the quality and editing that's a hassle. Owning a phone with a slow processor can be frustrating. I mean even Canva seems to "reject" it. I've installed canva multiple times and uninstalled because it never opens. Well it does but all it does is load continually till i eventually run out of patience.
This is a number one goal for me though. Sometimes finding the right pictures on those free websites are just impossible. And pictures communicate a lot. The last thing we want is an off picture on our "sexy" post.