Hi, welcome to CS If you need answers to your questions, it'll be best if you could post your photo/s and the relevant camera settings with your questions. That takes the guess work out for those who wish to answer your questions and to help you. This is just like passing a torch without batteries in the dark and asking can you see the exit?
1. Lower ISO setting (i.e. 800 to 400) then increase you exposure by +0.7 or +1 stop.
2. Lower ISO setting (i.e. 800 to 400), have the same settings (aperture & shutter speed) and use flash to compensate for low-light.
3. Use a fast lens (i.e. f2.8 lens).
People always say that Canon cameras has noise advantages over the other cams, so I don't think it's going to be that bad. Perhaps you would like to post a picture to show us and let us know the settings as well.
Frankly, I don't mind the noise in your picture. I can accept it, though its kinda OOF. Of course shooting at ISO 3200 is noisy. Some pictures look good with noise but some don't. So its kinda subjective.