V4 lama problem

I just bought a Esky lama V4 and found out that it is quite difficult to fly, any bro can give tips to play with this little guy!!

it is the very easy one.

I tried it in the car park, it float like a ghost,

Do I need to buy the flight sim first??

Did u adjust the blade tracking properly, the blades both upper and lower must me tracked, not like > < , and did u trim all channels properly, I mean u should the most nearest middle point as initial. And finally, the 4 in 1 / gyro gain tuning.

This little flyer is really easy fly. In my opinion, it's easier than flight sim / picco z.