Replacement knee Walker for broken

My 3rd knee scooter is worn out from heavy use. I will need to use more heavy duty model because I will be using it at least 6 months probaly more. The reasons I need one are as follows.
1. I can't walk or put weight on my leg at all.
2. My bone is not healed
3. I am not coordinated enough to use crutches without injury.
4. The scooter is the only way that I can get around wherever I go.
5. I am also looking to get them to amputate my left leg. This will also help mobility when this surgery happens.I would never  ask for help but I simply cannot afford to purchase this since I have been on leave of absence from work and had my pay cut by 50% . I do not know when I will make it back to work at this time but looks to later than sooner unfortunately. The expenses of living, Dr bills, and not being able to work has made it hard for my family of six to make ends. Like I said I don't like to ask for help and it hurts my pride but it will make me more mobile and help with the quality of life. Thank you for reading this and thank for any support that you can give. God bless.