Games : How can I easily rank up?

I want to be rank 50 as fast as possible to call muggers on my friends.

Which missions earn the best RP?

I tried the heists but they are not reliable for various reasons :

• One time I couldn't take the plane to the airport in time.


• Another, I broke the plane.


• Another, some stranger died and finished our team lives.


• In another heist, I got shot down.


• And I fell down and died.

I need a easy to play, fast and popular mission for GTA Online, which gives a lot of RP and money.

As you know, you can't open every mission on all ranks. I am rank 8 at the moment. However my latest rank can be seen here (My rank is written under "GTA Online"). But, because that this might be a solution for other people, please include parts like "Best missions between ranks 0-3" and "... 3-5" and "... 5-10" etc.