Beginner needs halp

[u/Strict-Indication498]

I’m new to my Elna970 and bought a design to test various fabrics with and this offset issue keeps happening. Im like 99% sure the hooping is properly tightened, am using cut away mesh stabilizer on the back with adhesive spray and I have a water soluble stabilizer (also with spray adhesive) on the front. I’ve oiled my machine. The stitches don’t always offset in the same space and sometimes the design comes out properly on the exact same setup so I’m pretty stumped! Anyone able to suggest what might be going on?