Not sure if you’re thinking of long or short term, but I’ve found that if I want to have, say, 2lbs of stawberries last me until I can eat them that a vinegar rinse in the sink will stave off the mold. It also has the benefit of killing off some common bacteria like e coli and staphylococcus aureus if you let it sit for long enough. Whenever I get fresh fruit that I’m not going to eat that day or the next, I’ll clean it by dumping it in a colander and spraying it thoroughly with a spritz bottle full of food grade white vinegar and letting it sit for at least 5min, sometimes a half hour. Then I rinse it with water, let it dry a bit and then put it in the fridge. Strawberries will last over a week generally, and they usually go soft or ferment before they go moldy.