How do I prevent rust from develop on my pots and pans. When I buy new pots & pans eventually it start to?

develop after I wash it a couple of time. I usually buy the nonstick pots & pans. I just move out of my own I'm a 18. I just need some advice and suggestions. I also like to know are there some brands that are rustproof let me know. I just don't want to keep buying pots & pans every few months.
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