I [21M] don't know how to be interesting enough to be in a relationship

I am 21 years old and have not had any sort of relationship whatsoever, not so much as my hand being held. I have been obese for much of my life but have lost 60 pounds in the past few months. I have been feeling better and looking better but I still have no success. I've recently tried online dating and tinder and all that and it seems the issue is that I'm just boring, I dont know how to or what to talk about with people, no life events or stories of note. I work with computers which is a turn off for many to begin with.

How can I fix this? I'm tired of being alone but I've run out of things to try. I'm on the shyer side but have tried to be more forward but no strategy will hold anyone's interest. How do I do this?

tl;dr I can't figure out how to get other peoples interest and need some help.