That's not true .. ND u can go back to football or any game but u need to get rid of all adhesions ND scared formed in acl pcl mcl lcl due to post operative immobilization ND the results of repair process
Next Steps
U need to approach to a sports physio who is expertise in Ligamentous dry needling kinesio taping and manual therapy... U will be back to your desired positions in 10_15days with subsequent 5-6 follow-ups
Health Tips
Change physios if u don't get relief but never approach or change an orthopedics surgeon