((((((((((foodiex2))))))))))
I'm sorry you're feeling sad. Unfortunately, that's part and parcel of this recovery journey and you're right in the thick of the "darkest days". It will get better. Allow yourself to cry, because tears are healing.
Post op blues is a reality - be prepared for it
I think that any talk of a MUA is premature. It's still less than a month since your surgery and your knee had the setback of the haematoma, so it will need to be allowed a bit longer than usual.
In any case, there really isn't any need to try and rush. As long as your knee is making progress, even if it's only a couple of degrees, you are doing all right.
IMHO, doing a MUA before at least 6 weeks is rushing things and expecting too much of a wounded knee.
While it may bring quicker results initially, your knee was probably going to get there in the end anyway, without the added trauma of a MUA:
MUA: the ineffectiveness of early MUA (JBJS)
So, if your surgeon suggests having an MUA next time, tell him that you want to wait for a few more weeks, to see if your knee can improve without intervention. After all, it's your knee and your choice and only you can say what will happen to it. No one can force you to have an operation without your full consent.