What's the best oil to get for my Honda Civic lx 2001?

I need an oil change and happen to know nothing about cars but I'm trying to start learning and gunna try an oil change by myself with help, but I need to know what oil to buy I live in a desert, I don't care about anything else than keeping the engine working good so what oil should I buy?

5w-30 is a pretty standard oil for the year of your car.

5W-20 is the recommended oil. That's what the engine was designed for.

15 years old? Don't waste money on expensive stuff. Just change it on time