Okay, so i need to focus on losing fat. How can i check my bodyfat %? How to calculate this?

Machine totally not accurate its a waste of time. IDK for people; what's the point knowing body fat percentage number?

You can look at mirror and tell what your body fat percentage by googling image for reference. If you not satisfy with it then adjust till you happy with how you look. Not how much the digits.

Try drink lots of water then go test again.. You will get more lean muscle mass and less body fat. Does that mean drinking water builds muscle and lose fat?

What if you're doing good, looking good on mirror and losing fat but the machine tells otherwise? Should that person continue what they doing or trust the machine and get de-motivated?

If the machine is inaccurate. How is that a reliable reading?

The most reliable reading is weight scale. Weight goes down consistently, fat for sure will go down as well.

Mirror is your best friend. If you look good then why bother the fat percentage or body weight.

Yeah. Some people will say you need to get to your standard BMI to be healthy or whatever. Is it really hard to tell if that person is above/below average body?