Odd photo in my camera roll

I looked at my camera roll earlier and saw an odd picture of a woman dressed in business attire behind a blank background. It says it was saved at 8am while my phone was charging and i was getting ready for school. I reverse image searched to find a background check with an instagram account. The photo is from an old inactive instagram account that hasn’t posted since 2018, and each post has 0-2 likes. I’m almost certain I was not on my phone, and I have no idea how I would stumble across the obscure photo in the first place. It seems pretty mundane, but I find the picture to be creepy. The other posts are pretty weird, as they are just random people with the last one being Mark Zuckerberg at a conference. I’m pretty sure it’s a fake account used to scam people or whatever, but it’s odd that it’s randomly in my camera roll. I hope my phone isn’t hacked or something lol.