I've been using a version of this soldering iron for a couple years, and it's just fine: https://www.amazon.com/Electronics-Yome-Adjustable-Temperature-Desoldering/dp/B07P84TTCS/ref=sr_1_7?dchild=1&keywords=soldering+iron&qid=1588870773&sr=8-7

If you search "soldering iron" on amazon you'll see it come up under various brand names, and different packages of tools ranging from bare-bones $12, up to about $25.

If you use it a lot, eventually a good investment would be a heavier duty stand and metal tip cleaner, like this: https://www.amazon.com/Hakko-633-01-Iron-Holder-Cleaner/dp/B000TGNWCS/ref=sr_1_11?dchild=1&keywords=soldering+stand&qid=1588870963&sr=8-11&swrs=FA8A11FFAA23C0498C0B69198EBF84C8

but try to find a generic one (I got one for less than half that price, but it's not available anymore, but with a little research you can probably find one).