A small correction, only one team gets relegated by being the worst in the table. The other relegation is handled by a system of averages, where you take the current season plus the two previous seasons and divide the number of points each team has gotten by the number of matches played. The team with the worst average gets relegated alongside the worst one on the table.

Thank you helped when I’m trying to learn how to play football manager.

Who plays at home then ? If they play once