Frustrating results with at home finger pricking

When I prick my finger, minimal blood comes out and I have to squeeze my finger. I think this skews results, no?

I also got a 126 2 hours after dinner and re-tested immediately(washed my hands, alcohol swabbed, and all in between) and got 106 then again and got a 109. How do I know what is truly accurate?? It is all so difficult to me