randint stops changing values in a loop

[Naito]

hi! i have a problem i can't understand, randint stops popping new randdom values even if the variables are in the loop:

def pvp():
    dicesonboard = []
    dicesused = []
    dicesonship = []
    dicesremaining = []
    socres = {}
    rounds = 0
    print("if you want to quit type quit")
    while rounds < 3:
        dice1 = randint(1, 6)
        dice2 = randint(1, 6)
        dice3 = randint(1, 6)
        dice4 = randint(1, 6)
        dice5 = randint(1, 6)
        dice6 = randint(1, 6)
        userinput = input("to start the game type throw: ").lower()
        rounds += 1
        if userinput == "quit":
            break
        if userinput == "throw":
            print("let the game begin")
            print("Round", rounds)
            dices = [dice1, dice2, dice3, dice4, dice5, dice6]
            print("Thrown Dices:  ""Dice I: ", dice1, "Dice II: ", dice2, "Dice III: ", dice3, "Dice IV: ", dice4,
                  "Dice V: ", dice5, "Dice VI: ", dice6)
            if 6 not in dicesonship:
                if 6 in dices:
                    print("you have a ship now gather a captain and a crew")
                    for i in dices:
                        if i == 6:
                            dicesonship.append(i)
                            dicesused.append(randint(1, 6))
                            break

as you can see, i did put ranind inside of an append fund while looping but the value stays the same

Error:
Round 1
Thrown Dices:  Dice I:  6 Dice II:  6 Dice III:  6 Dice IV:  1 Dice V:  2 Dice VI:  6
you have a ship now gather a captain and a crew
[5] [6]
to start the game type throw: throw
let the game begin
Round 2
Thrown Dices:  Dice I:  3 Dice II:  6 Dice III:  4 Dice IV:  5 Dice V:  1 Dice VI:  1
[5] [6]
to start the game type throw: throw
let the game begin
Round 3
Thrown Dices:  Dice I:  5 Dice II:  1 Dice III:  6 Dice IV:  6 Dice V:  3 Dice VI:  4
[5] [6]

focus on the list with the int 5 (don't care about the other list), i did try to change randint to the variables (dice1,2 etc) but that dosent work..

anyone can explain to me how does this work because i just don't get it, thank you!