Need help with legendary.
Sorry to say but unless you know how to use the TP to gain money then you are looking at dungeons. AC/CoF is run most often as it is very fast or gives a good return. Use Omnomberry bars while they may seem expensive you will make your money back off the first dungeon boss you kill with it and it lasts for 30 mins so you will always double/triple the price of using it, AC can usually churn out 3-5g if you run just 3 paths.
The excess dungeon tokens you don’t want can be traded in for exotic dungeon armor, you can salvage those for ectos if you are lucky. There is also Orr which you will be farming a lot for all the high end materials such as ancient wood planks and omnom berries, depending on which legendary you want the materials needed will be different.
Final piece of advice would be Fractals, the loot here seems to be far superior to that of any dungeons or farming mats. You can easily net a few rares and exotics here per day so check that out too.
Hoped this helps
had the exact same question.
https://forum-en.gw2archive.eu/forum/game/crafting/Legendary-crafting-tips/first#post1186778 got some good tips.