It would also be pretty sad if they forgot about you. Maybe say hello and offer to organize a meet up? If worst comes to worst and they don't want to, just don't sweat it. Friends come and go and will often go their separate ways as time goes on. I know it sounds cold, but if your friends forgot you or worst case scenario just feel like excluding you, I'd say it's time to just let them go and find new ones.
Yes I've tried so many times to organize a hang out but it never works out because they just don't try as hard to actually pull through with the plans with me and they would with each other. Thank you so much for the friend advice. I'm really just thinking about just simply not really calling them my friends anymore, but acquaintances, and not really caring too much about them since they don't really seem to do the same. Although I'm not sure if that's super harsh....