Base layers are usually printed at 40% of your printing speed...
So if you are printing at 70ms feed rate, it will be like 30ms for the first, layer, ie very slow. There are ways to change this with proftweak
Is the first layer printing really nice but by about layer 2 or 3 it starts to lift? this is your hot bed material or heat settings.
IF the FIRST layer is peeling off literally as it's printing, you most likely are not printing close enough to the bed.
RAFTLESS prints need to be SUPER close to the bed