my pc is very old. i realy like the idea of speedrunning my game but my pc even at lowest settings cannot run above 20 fps in minecraft. i have tried other games, i have tried optimizing but nothing helps. im too poor to even get an upgrade. my pc is 20 years old. no modern screen recorder works bc of my os and gpu (which supports dx9 i think)

what do i do without spending money? pls help. if there is nothing i can do please let me know any help or critisizm will be helpful