Interest is the foundation and key of everything. If you like this sport very much, you will naturally do a lot of seemingly hard and boring things for it.

First, see if you are interested in basketball enough. If not, you can play a dozen games with your friends and cultivate your interest first. Then you can watch a cartoon-Slam Dunk Master (I started to like playing basketball after reading this cartoon more than ten years ago), and it will even tell you some basic basketball skills.

Then playing basketball is a sport that requires physical exercise ability and confrontation ability. Your height is 174, but your weight is only 50KG, which can be said to be too light and thin. 16 years old, it is time to grow up. I suggest you eat more every meal until you feel full. You can also go to the gym if you can. If not, practice dumbbells, do push-ups, sit-ups and squats at home. You must stick to it.

Then during the holidays, in my spare time, I tied two sandbags on my legs and practiced speeding or climbing stairs to see if it was morning or night. It can exercise your explosive power and jumping ability.

As for the basic skills of basketball, I personally don't suggest that you practice all these basic skills from the beginning, such as dribbling, defensive sliding and rebounding. If novices practice all these skills, it is easy to get bored and give up.

Play half-time with your friends. In the half-time game, you will naturally find what you are missing, and then you will naturally practice by yourself when you are free.

If you really like and are interested, there are naturally ways to learn and practice well.