Can I suppress ("blue-screen"?) the background of a video?
Well, white could get quite difficult, it would need to clearly differnce you from the white background. (Dark clothes, dark hair...)
Else I'd guess this won't give a good result.
It would be better if you hang a green/blue clothe behind you. Something like a bath towel will do it just fine enough. Make sure to hang it really tight and put some good lighting on it.