Make your clothes last by owning a small functional wardrobe of high quality clothing & washing it all by hand.

Research the correct methods of washing for your fabric type. Cold water is best for most things, but hot is appropriate for whites, especially towels. Know what you can & can't wring out, & make sure you never use standard detergent on wool, cashmere, mohair, or silk, they are protein fibers that need special care.

Invest in a clothesline or a big drying rack, & have something ventilated that you can put "flat dry" items on. The dying machine is the biggest clothes killer, the heat literally destroys fabric.

Never use fabric softener either. It ruins the fibers and causes a buildup that makes clothes reek and feel floppy and heavy.