Buy a Dutch Oven

 This is a mandatory piece of kitchen gear.  

You can use it for sautéing, frying, roasting, braising and they come in so many pretty colors.

On the serious, if I only had one piece of gear to cook in, it would be one of these.  Because of the cast iron, it transfers heat evenly and prevents burning.  We have these in class and they've taken a beating but still hold up.

Oh, and they're a bargain.  The French ones can cost $300, this one at Amazon is only $70.

Here the link https://www.amazon.com/Lodge-Enameled-Classic-Enamel-Island/dp/B000N501BK/ref=sr_1_2?dchild=1&keywords=lodge+dutch+oven&qid=1609922169&sr=8-2