Help Me Build A Gaming PC

When i started working at the age of 17 playing online games are more difficult as time goes by. Now that i already bought a PC all i can play is a low-end pc games like Dota and LOL. A friend of mine gave me a PUBG game on steam but i can't play it because my pc doesn't have the minimum requirements of the game to run. Im hoping that you can help me build my pc. Thank you!