7yr old Knee dislocation, still knee

I had dislocated my left knee 6-7years back. I had appied force to put my knees back in place when I had dislocated my knee. I had shown to doctors and I was given medicines. I had done X-ray as well but my injury wasn't severe. I used medicines for a while(few months) and when my knees were alright I stopped using it. After dislocation, my knee has always been weak. If I try to run I feel as if my knees might dislocate again so I avoid running. Whenever I do workouts(deadlift/squats) or take long walks( 1-2 hours each day) my knee starts to hurt. I take breaks for a few days in between for my knee to recover but again when I walk for long hours the knee pain comes back. My questions to you: 1) Is surgery the only option as it knee pain keeps on coming back? 2) Should I totally not do any leg workouts or go for long walks? 3) Should I take any medicines or balm for knee pain?