Better take your offer if you're just trying. Making an offer is cheaper, but you need to keep your Bisq application running until someone takes. If you follow this path, put the 1st or 2nd best offer and improve the offer by editing it until it's taken.

You can edit the price but not the amount of BTC to trade.

Another thing to have in mind is that the bigger the offer, the lower the fees, so if you trade less than 100USD the offer will be harder to be taken. Some people want to try with 50 or less USD and gets frustrated.