Is it worth it? Any luck at it?

I have been trying this thing called Plenty of Fish since last month and its nice because it is free, but I have messaged probbably 25 girls and have yet to get a response back.

Thinking of trying Match or Chemistry but it is expensive for something that I should ideally be able to do for free in real life. Ever since I graduated college I have had a hard time meeting girls and where I work there isn't that many my age.