Acl Impengment (Loose Graft)

Has anyone here experienced a loose ACL graft after the first surgery? Mine hasn’t completely failed, but it’s not very stable. I feel pain in the front and middle of my knee every day, and even small walks or light activity cause discomfort and pain all day. When I do the Lachman test, my tibia moves forward more than my non-operated knee. It’s been 4 years since the surgery. Has anyone else experienced this? Do you think a revision could help make it feel better?