2. Every unit of our army, including special forces, where to recruit every year is arranged by the headquarters at random. The leading cadres of all units can't be the masters, so it's no use looking for them!
3. According to the regulations, active servicemen can't surf the Internet unless they need it. You ask these questions here, they may not see it at all, and even if they do, they may not be able to help you. ...
What you can do now is actually to study hard and exercise well, and then see what arms you can recruit when you meet the recruitment requirements. You can only choose from them.
By the way, the plot of the special forces choosing the best soldiers in the TV series is made up. In reality, recruits are basically recruited from a few places and trained from scratch.