Ok so everytime I make rice or spanish rice with tomato sauce it
always ends with the rice being like paste. I put 2 cups in water so
it can soak to get the startch off but whatever I do, it always comes
out like clumpy and pastey. I notice moreso when I put tomato sauce in
it.

I put the rice in the pan and pour water in it (obviously) and it
seems fine, but right when I put the tomato sauce in, thats where the
problem begins. Any advice?