there is a drop down menu linked to your profile image in the upper right corner. click it and you'll see an option for replies - that is where you can quickly see if anyone has replied to any comment you have made. Comments option is for comments you have made to others.

If you do want to give Steemit a chance I would suggest using the app discord (which is a chat app) @ginabot runs through discord and will send you a message any time you're tagged, you get a comment or a resteem. You can even add specific people and get notified when they put out a post or a certain tag is used. Check out her profile for the instructions on how to set it up.

I hope you'll give it a chance! If you need any help I'm on discord as amariespeaks#9425 feel free to send me a friend request and I'll try to answer any questions I can.