Why Google ads display campaign CTR didnt get much click

Hello,

I recently tried google display network, but unlike other networks, here I receive very few clicks. When running campaign with other networks i got proximately 0.5% CTR, but Google display network it's almost 0.01%. What do you think ?

here is the statistic of my campaigns:

Did you try other methods? CTA's, opt-in offers, keywords, optimizing landing pages, etc...
PPC is all about testing, re-testing, and re-marketing....may take a bit more coin....