First Way is :
– The First Char is your MAIN Character. All Desired Materials / Equipments will be stored here first.
– The Second Char is used to Unlock ALL 3rd Job Headwears. After all Headwears Unlocked, you can use this one as second main char.
– The Third Char is Erasable Char, which just used to farm materials / cards based on their levels, and getting Free Level Up Bagsss. Note that you’ll always get it with your new chars, and once you reach lv 50, 90, and 99 you can claim those free 3 cards. And last, the item drop rate are much fairer while in low level.
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Second is , you can start Group Hunting with the other 5 players, it boost you 30% more drop rate by your current drop rate (+ penalty) , so if you have drop rate penalty to 20%, by group hunt you can increase it by 30%, meaning it will be 26%
———————————————————————————————————Third is, be rich and buy all materials you need.

IMO as Solo Hunt F2P I would recommend first way.
And if you’re looking for a Very Low Level Card in your Very High Level, you don’t need to worry, just buy 3 cards with the lowest price in exchange, then reroll them at King Poring. Just In case if you missed Poring Card while your level is already 100, if you’re lucky you can get from it. Since it’s counted as “Draw”, you can get both “Attribute Reward” from Card