I recently got some new shoes and I really don't want my husband to find out that they are new.
Did you think he would be upset about the new shoes?
My husband will get mad that I bought new shoes while he's not working
I can understand you not wanting him to be mad, but you should be honest with him. Not telling him that you bought new shoes is the same as lying to him.
I want to ruin his life. I'll deal with him later.
Sounds like his life is already down bad with him not being able to work. Putting more of a burden on him during this isn't good, and it will not be helpful to you. You need to support him during this time.