I need to know what aspects each skill point that can be awarded to the players improves, for example, physical condition, passing, ball, positioning, technique, tackling, pieces, I understand, I want to know what it is for or what skills each aspect modifies. that improves in players

I'm very sorry, my phone resend the same message, I apologize for that.

0 general - any skill but slower
1 Goalkeeping - handling
2 Defending - off the ball, positioning, tackling, heading, set-pieces
3 Attacking - off the ball, positioning, heading, finishing, set-pieces
4 Technique - passing, technique
5 Physical - strength, speed, natural fitness
 

taken from the docs.

I don't know the detail about all of the stat on player.. but by logic i can explain like
 

• Handling = keeper one on one or save goal
• Positioning = for better intercept or create goal chance (RNG)
• Passing = same as above (RNG)
• Heading = Higher the stat higher the chance to score a HEADER GOAL (RNG)
• Set Piece = like free kick, corner, you can appoint player to take free kick, corner as this stat high. Also for FREE KICK GOAL (RNG)
• Speed = I dunno... but by logic it can be for counter attack - fast attack/defend or maybe for keeper to recover
• Off the ball = I dunno.... by logic its same as positioning just more to support/guard/mark
• Tackling = high stat, high defend, low chance for card
• Technique = I dunno... by logic its more to player skill or dribble
• Finishing = high stat, high chance to score by any goal method (RNG)
• Strength = I dunno... by logic its more like player less to losing the ball from opponent, more possession
• Natural Fitness = High stat, low energy/Stamina depleted each match

If You want to know what stat need to be focus for each player role/position, just look at the underline stat on that player. Besides there still more missing information in game on how the stat work. If anyone have other information can share here

P/s:

I dunno - No clue on the true mechanic on how that stat effect player/gameplay

RNG - random number generator (event occur on match)

Goal method - Penalty kick, Long shot, Freekick, Header, One on one