You are still in the development stage, so don't worry too much about muscle mass. You should pay attention to the improvement of physical fitness and physical fitness, and exercise well. When you are mature, you can exercise your muscles systematically. It's not too late! !
The data you reported is normal for ordinary people, and 175 65kg is still very meaty, haha.
The arm is not strong, and there is no sense of sight. It's shocking only when the curved arm is above 40, and the straight arm is 38.
I have been there before. I used to bend my arm by 35. After 1 years of exercise, now my arm flexion reaches 42, and the peak of congestion can reach 43~44, but my 185 still does not shake, for your reference;
I have some teaching videos. I can help you if you need them.
At this stage, you mainly use push-ups+pull-ups+sit-ups to improve your physical fitness and lay a good foundation. It is very helpful to embark on the road of bodybuilding in the future. I hope I can help you, come on! ! ! !