I heard that a man is allowed to force his wife to sleep with him if she doesn't make herself available to him, if you can explain this to me I'd very much apreciate it

by

1- The wife is obligated to make herself available to her husband whenever he wants (unless she has a medical excuse, or she stated in her marriage contract that she can make herself available whenever she wants).

2- But the man cannot force her and hurt her. He can ask, or appropriately pressure her, but not use physical force.