Really, really low FPS!

So ive been playing rust for about a month, i have to say, i love it. the only problem i have is i only get around 5 fps, 10 if im lucky. I’ve done everything in game that i could, the only respone ive been getting is “get a job and get a new computer.” I’m only 14, there aren’t many jobs that hire at such low age. Any suggestions? Thanks you for your time.

summery in specs please

depending on your computer getting a new desktop may be the only way.

Heres my specs,

Manufacture: Acer
Model: Aspire x1200
Processor: athlon Dual core processor 4850e 2.50 GHz
System type: 64-bit operating system

thanks for the help, if theres anything else you need to know please let me know!