i feel old (in 30s) when i have problem to distinguish these two services, do I remember correctly that Instagram is just some photo albums for food (not sure w

i feel old (in 30s) when i have problem to distinguish these two services, do I remember correctly that Instagram is just some photo albums for food (not sure what's difference from Google photos) and Snapchat is some chat with stickers for teenagers? I don't use Twitter, Facebook or pretty much any social media (besides Reddit and HN) and I don't feel like i am missing on something.