I neeed a computer

I need a computer! Why? The craving for tech. But i am only 10 so i can't buy computers. I can go to recycle centers, but thrift stores are not locatet in my area. I can go to Bazoš.sk and select max 20eur computer i like 2010 and 2000's machines maybe late 90's

but i need buying advice and overall get know: How to buy a cheap computer