[Rudy_]

create a global variable
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pawn Код:

new Freezed[MAX_PLAYERS];

In your freeze command, When you freeze someone add this

pawn Код:

Freezed[playerid] = 1;

And when un-freezing check
under /unfreeze command

pawn Код:

CMD:unfreeze(playerid, params[])
{
    new id;
    if(Freezed[playerid] == 1) //Means player is Frozen
    {
        
        TogglePlayerControlable(id, true); //Unfreeze player
    }
    else // Means player is not frozen
    {
        SendClientMessage(playerid, -1, "Player is not frozen");
    }
    return 1;
}

Note: This will not work, it's just example. So don't copy it.