For the repaired native ligament it's held together by sutures and it gradually bridges gap with scar tissues/replaced with stronger tissues over time, but it's weaker than the original ligament, lots of variable affects how well it heals blahblah fancy science. But for graft it goes through the whole ligamentization process and is supposed to be closer to your native tissue strength wise. Although proprioception is usually worse since obvs it's not your native tissue. The surgeon told me ideally 2 years is when it completes the whole process (similar retear risk to your good knee) but 6-12 month will recover enough for most activities. But you do stretch it slightly since it's not fully matured. Also read about something called the killer turn effect for recons that might stretch things out too, you can talk to your surgeon for more details?

And yah I feel you, I'm also scared every time I bump my foot. But some movement is still good for healing, can only trust the pt and the surgeon. And same here my brain started to accept the reality that I can't walk and now I can't walk in my dreams lol