There are a lot of creeps that you can find online so it is best that you will avoid their ways. The first thing to do is to make sure that you will not provide too much information. You do not want to be stalked by someone you do not know, right? Even if you see that there are some mutual friends, do not accept that friend request.
You still want to keep your social media websites and your profile private. If you do not want to converse with someone whom you consider to be a creep, then do your best to ignore that person. You do not owe the creep any reply if you do not want to provide any response.
The first way to avoid creeps is to modify yourself. Do not post seductive pictures on your tinder profile. Instead, post classy pics to attract the good men. Privatizing your profile also helps keeps creeps at bay. Even if you do receive a DM from a creep, a great way to finish it off is to ignore the message.
If you do want to reply, trying being someone, you are not, you can reply pretending to be a father or a mother, which will definitely put him off. In any case, you always need to be stern and direct. Do not waste time trying to be polite and shut the conversation off, before it takes off.