Need help figuring out my target audience

I've been paying for ads on Facebook but got no sales on any of my products. I'd like to get feedback from people with experience, please PM me if you can help and I'll share my details.
My niche isn't a secret or something, it's just the I don't know if it is allowed to post links and other stuff over here, so I'd rather get help more personally.

I also have Skype if anyone is really willing to help

I'd be happy to help. PM me

Might be able to chip in as well, I'm working in an agency that specialises in Fb/Google media buying.

You will need to provide more info on your campaign. But the most obvious answer is the audience you are targeting, maybe it's not the right audience for your vertical

It's takes a few days and a lot of money or FB to optimise. After that it should be cheap and a high ctr or your ad is just bad

Maybe I can help you, pm me

There are a lot of factors that can go into FB advertising, ROI, etc.

Don't know your niche but the one "trait" so to speak that has been pretty consistent across multiple offerings is finding the audience that is most passionate about your products/services. If you're pushing blue widgets, don't just use target audiences that like the color "blue" or plays with "widgets". You have to identify the people that live and die for blue widgets, will publicly tell their friends, family, total strangers that they are into blue widgets.

Once you identify and find that and combine that with good FB advertising practices, you'll start seeing some sales.

Good luck.