Buying a car need advice.

Does anyone know any ways on how to get some quick money for a car?

So I had planned last week to meet up with a girl about a car she’s selling for 5.7k and the original plan was to use my income tax to buy it but unfortunately I was only able to get back about 4K. This is kinda awkward but I had lost my job last year and have been struggling to get one since. It’s been since November. However my mom just found out my dad was a millionaire. He was really big into coin collecting so just recently we started going through his stuff (we lost him in 2018) and my mom has been very specific not to use the pure silver coins he bought to get the money I need along with the other collectible coins he had bought and saved. The only thing about my inheritance is that my dads money has to be split between the 3 of my siblings(counting me). We have money in the safe but was unable to find the key and my mom refuses to call a locksmith just to get it open to help me get the rest of what I need. She believes there’s money in there that’s not collectibles that I could use but it’s no luck when you can’t get into the thing.

So Ive been struggling to come up with the money and I have about 24 hours left to come up with what I need. I have tried selling some antiques my dad had left behind but couldn’t find no one to buy those.. even tried Craigslist but no luck. So I am stuck and I don’t know what to do. I’m 21 years old and have never even had my first car. This would be my first. I believe the lack of me getting a job is because of having to work around my moms schedule to drive and take me and that getting a car would give me a better opportunity for work. I just don’t know what to do. Embarrassing but I even went as far as to selling nudes to a dude just to make $30 because I didn’t know what to do.

Does anyone have any advice? A loan isnt an option either as I have no credit. TIA!