There isn't much amateur style VR porn content, because even the actresses need to know what they are doing regards the filming.
The oldest VR porn sponsor VirtualRealCash actually has an amateur site but only a few videos and I don't think they have updated it for ages.
VirtualRealCash
ExtremeMovieCash also has an amateur style site but they haven't updated in years I think (despite what they say on their homepage).
ExtremeMovieCash
Apart from that I agree with BigFurry that the CzechVR sites are good (although I preferred them at the beginning when they just had a minimilist bed, so it did feel amateur and intimate), and VRAllure.