As a kid, I also enjoyed playing football and would get very sad whenever I wasn't picked. My football wasn't quite as organised as yours is.
We simply get a ball and play at the local fields/playgrounds in the area. There are normally Two or Three captains depending on the number of people present and we made teams of 5-8. If your team gets scored two goals, your set is burnt and the third team replaces you. If there's no goal or draw after 15 minutes, they either play penalties or flip a coin(coin flip is always controversial lol).

Oh the good old days