Left knee injury. Should i do about it?

Hi, I am 26 year old male, I got the talus fracture injury about 3 years back, happens due to fall from height, the talus fracture has been cured, but since then I got some problem in my left knee too, I consult many doctors about it and they told me its nothing you do physiotherapy and all, but it has been three years the pain is still there, Finally I consult another doctor Got an MRI and report shows all the finding has been normal but there is Grade 2 ACL tear. The doctor suggest me to go for ACL reconstruction surgery at earliest. I want to know if that has been the only solution for this or there is another way like doing physiotherapy and also I am worried about after surgery process like will I able be normal. How much time it would take? Will I able to run,play sports and all? Please suggest me what should I do about it ? Thank you in Advance.