Tight blood pressure cuff could increase bp, cz my bp was 133/76 but i put the cuff not at the same tightness as first it give 104/67?

It would be better to have a trained person, like your doctor or nurse, take your blood pressure. The blood pressure cuff should be snug before inflation.

I have a few questions; how are you testing your blood pressure? At rest, not eating for 30 minutes, feet on the floor while sitting? How we measure blood pressure makes a difference. A doctor in person during a physical examination can help determine if there are any health issues related to high blood pressure changes. A wrong-sized cuff can cause inaccurate BP readings