Using foreign keys with multiple tables - sql

Question

I have a problem with creating a database. My fictional problem is to create database for tracking volleyball games. It should contain information about players (team they play in, one player can play only in one team), and played games( every game contains 6 players in each team).
I wanted to create following tables :
Player(Id P,Name,Surname,Team_Name F) ;
Team(Team_Name P,Coach);
Game(Date, Team1 F,Team2 F,Player1_Team1 F,...Player2_Team2 F,Player1_Team2 F,...,Player2_Team2 F).
I wanted that Team1 and Team2 are foreign keys Team_Name from Team table. Here is my attempt, I get that foreign key is incorrectly formed. I will be very glad for help.
CREATE TABLE Team (
Team_Name varchar(20) NOT NULL,
Coach varchar(20) NOT NULL,
CONSTRAINT Team_pk PRIMARY KEY (Team_Name)
);
CREATE TABLE Game (
id int NOT NULL,
Data date NOT NULL,
Team1 varchar(20) NOT NULL,
Team2 varchar(20) NOT NULL,
Score int ,
D1_Player1 int NOT NULL,
D1_Player2 int NOT NULL,
D1_Player3 int NOT NULL,
D1_Player4 int NOT NULL,
D1_Player5 int NOT NULL,
D1_Player6 int NOT NULL,
D2_Player1 int NOT NULL,
D2_Player2 int NOT NULL,
D2_Player3 int NOT NULL,
D2_Player4 int NOT NULL,
D2_Player5 int NOT NULL,
D2_Player6 int NOT NULL,
CONSTRAINT Game_pk PRIMARY KEY (id)
);
CREATE TABLE Player (
Id int NOT NULL,
Name varchar(30) NOT NULL,
Surname varchar(30) NOT NULL,
Team_Name varchar(20) NOT NULL,
CONSTRAINT Player_pk PRIMARY KEY (id)
);
ALTER TABLE Player ADD CONSTRAINT DZ
FOREIGN KEY (Team_Name)
REFERENCES Team (Team_Name)
;
ALTER TABLE Game ADD CONSTRAINT MD
FOREIGN KEY (Team1, Team2)
REFERENCES Team (Team_Name, Team_Name)
;
ALTER TABLE Mecz ADD CONSTRAINT MZ
FOREIGN KEY (D1_Player1, D1_Player2, D1_Player3, D1_Player4, D1_zPlayer5, D1_Player6, D2_Player1, D2_Player2, D2_Player3, D2_Player4, D2_Player5, D2_Player6)
REFERENCES Player (id, id, id, id, id, id, id, id, id, id, id, id)
;

Answer 1

You should add one by one all foreign keys.
ALTER TABLE Game ADD CONSTRAINT MZ
FOREIGN KEY (D1_Player1)
REFERENCES Player (id)
;
ALTER TABLE Game ADD CONSTRAINT MZ2
FOREIGN KEY (D1_Player2)
REFERENCES Player (id)
;
ALTER TABLE Game ADD CONSTRAINT MZ3
FOREIGN KEY (D1_Player3)
REFERENCES Player (id)
;
GO
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dbfiddle here