When making pasta I add the pasta sauce to the pasta after draining the water off the pasta.
I pour the cooked pasta into a bowl and then add the pasta sauce to the top of the pasta.
This way the pasta is fully covered in the pasta sauce which is better.
You can also do it the other way if you prefer and add the pasta to the sauce if you want too.
But most people who make pasta add the pasta sauce to the pasta after cooking it.
So cook the pasta, drain the pasta and then pour the pasta sauce over the pasta which is a good way to do it.
But either way you want to add the pasta sauce to the pasta is okay.