Hİ I've been improving myself for months and I've decided to make a platformer  game with my knowledge but I need a 2d character which can jump,run,die,attack with sword or arrow and defence shield and also grap tile. How can ı do that and can ı get it from somewhere to improve myself ?

Thank you so much ı know ı want so much things.

Watch youtube videos and see a pixel art

you can use this software, its easy to understand and perfect for animation

https://graphicsgale.com/us/ 

You can try Animation Desk?