Help me help my dog

Calling all dog lovers. My wife and I have been affected by covid as so many have and just recently went back to work. My four year old dog Lulu pulled her ACL and will require surgery to fix it at a cost of $5000 or will need to be put down. I am heartbroken cause I don't want to put her down so I am here to ask for help, anything can help. Thank you very much for taking the time to read this and hopefully help Lulu.