As we know US senate passed this law that our personal information that our ISP has, That’s why I am tensed or conscious with my online privacy so Is there any way I can maintain my online privacy?
Use a VPN.
the question is rather easy due to dumb laws being passed in the US that strips customers of their digital rights, The ISP are allowed to sell the traffic (metadata. example surf patterns etc) to advertisers, hell i know this and i live in Sweden 
so best answer in this thread
For just protecting your surfing, not recommended for streamin or torrenting, this is a good article: