Is it rude not to follow someone back on Instagram?

[713]

Random people will follow me on Instagram and like my pictures but if I don't know you or you're not a celebrity I'm interested in then I don't want to follow you back honestly..

I feel really mean and really bad though when I don't follow back...so usually I'll go and like a bunch of their pictures...

I just don't like scrolling through my news feed and seeing a bunch of pictures of or from random people idk. It feels weird. I prefer seeing my friends and people I know on my news feed.

I'm even following someone I know in real life and they don't even following be back...I honestly feel like it's rude but I still follow her because I just like what she posts...even though I hate feeling like someone's "fan"...I feel like I can benefit from her, she posts some pretty cool things and gives me great ideas...plus she's extremely pretty...but anyways...
Sorry for the typos...autocorrect -.-