I've made sounds pretty similar to the first video a few times with massive, just a matter of getting your envelope settings right and using the right oscillators. Try using some effects before your filter, so:
oscillators > distortion > filter, or something like that.
Also, square and saw waves.
A lot of those basslines are layered, or have a few different sounds happening at once. Save yourself the trouble and just layer some sounds, instead of trying to get it all out of one patch. I swear you can get almost all of those bass sounds out of massive, no extra processing or anything.
The sound in the xx video just has a delay on it, try some FM too and a volume envelope and you should get pretty close.