How would you know through online dating if a guy is looking for a relationship or not?

I was on dating apps called Blendr but it got a shutdown from worldworld operations. I have found a new app that is the same owner. I have been using Facebook dating and a new app that I am on is called Badoo. There is an icon on the apps that is swiping and I said on each profile of men that are, chatting, ready for relationships , thinking of long-term relationships and one that is not looking for anything serious. What should I send back about when the user asks where I live. That has happened a few times I said near Manchester or Liverpool. I live near town. To not make mistakes and choose other bad guys. I had a bad experience with some women in the past when I said no to friendship or when I was in a previous relationship some girls or women just became mad. I am not sure how to deal with some women. It has also been cheated on previous boyfriends that happen a few times while in college. I am not in college anymore. I am only doing online dating because I don't see guys approaching women anymore in real life or they already have girlfriends. I get uncomfortable around players, cheaters and guys that are very bossy and do that one thing with his legs spread out. I did try to tell a member of staff but the guys were always talking and blocking me from talking to the staff. He was underage to drink alcohol. I didn't listen or talk but still try to boss me about that happening in real life while I was at the youth club. Also, he always wants to sit next to me. I don't want to. I did tell my mum after the youth club. What do you think about some of my experiences with women and man?
How would you know through online dating if a guy is looking for a relationship or not?
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