ACL tear of lower grade like grade 1 or grade 2 are usually managed by Physiotherapy exercises but in your case there's more damage and hence it could limit your daily activities like walking, standing and also you won't be able to play football unless it's managed completely. It's advisable to go for surgery as of now followed by Physiotherapy exercises for rehabilitation. if it's sooner it could better. Post surgery and successful rehabilitation program, u will be able to go back to playing football. Hope this helps.