the blue yeti microphone is one that is often used for youtube videos.
have you tried using it in cardioid mode (not sure if that is only on the pro model or not)
also... some people mount them on microphone stands which fixes the issue. the microphone will pick up background noise unless you have it located away from noise sources (you cant expect it to be on your desk next to the keyboard and mouse and not pick them up) or you use it in cardioid mode (if available) which provides a more directional cone of pick up.
thanks i did all of this but ill probably get a mic stand
ill see if it works