Are you sure about that? From reading your post, I get the impression you made your Instagram account public and started tagging your photos because you wanted larger numbers of people to see your photos.
In any case, I hope you can get back to photography and truly enjoy it. One suggestion is to see if there are local photography groups in your area, or groups for things you like to photograph (i.e. birds, etc.). These can offer great close-knit environments to share your photography and get constructive feedback, and to enjoy the photography of people you can have a connection with. Trying to get random strangers to tap a heart next to your photos is a soul-less pursuit.