No matter how many ffxiv gil we can make, if we use it without plan or waste it all the time, we can not have much gil left in our pocket. So, we have to know, how to save gil first.
Teleporting charges is one of our main spending in game. We need to pay gil so we can return or go to certain places fast. Even through you can choose to run through the maps and get to the destination, so you can save the teleport charging, it kills the fun of playing this game. So, we do not suggest it. There is several things you can do. It is to do all the quests available in this area at one time and then go back to the place you have to, or you have to run back for several times which costs you much more gil . Secondly, know the maps well. Many players rely on the hint in game a lot. When there is a mark of green check on the map, they know where to submit the quest and get rewards, but they pay little attention to the name of the place. Knowing the places well, you can find the fastest way to go back, which saves you gil as well.
We all want better gears, but it is not a great ideas to buy gears from NPCs all the time. As you can get nice loots in the quests afterwards, you don't have to waste money on items and gears you do not need much. Just spend more time exploring dungeons and raids, or be more patient with the following quests, you can have what you want at last. Lastly, save the materials you use on crafting can also save you gil.