How to increase my odds of getting visitor visa for US?

[madaraboss94]

All my cousins live in US and we’re planning to visit them this year end.

We have already been rejected twice before and we believe it was agents fault https://100001.onl/ https://1921681254.mx/ .

We’re planning to apply again for the 10 year multiple entry visa and was wondering what factors increase the odds of getting the visa?