Before getting frustrated i would suggest you to follow Sulfurblade advice
you have just reached “the crosroads”, that point in wich whatever you think you’ve understood turns to be wrong or not easy as you figgured… but DON’T PANIC , the answer is 42, whatever it means.
Because you have to take in consideration that:
Planets have different tiers,
higher tier planets tend to drop higher quantities;
also: higher planets will likely tend to kill your if you don’t have any kind of defence/attack/heal skill.
A pure crafter will be at a good point around lvl 40, without spending points in combat/defence skills…
and also: fibrous leaf are needed for tools/weapons up to titanium, than they are not needed anymore as gem-things use other materials; if you need materials only for yourself you are not going to need A LOT of those,
but if you want to run a shop with finished goods you wil NEVER be able to self sustain it, so you will need to place request baskets and coins, SoFirstOfAllYouWillNeedCoins, so first of all you will need to understand how to farm/grind coins to start everything so you will need CoinsCoinsCoins to - wait, stop! WELCOME IN THE ECONOMY SYSTEM my frieeeend!
Really it isn’t as easy as it seems at the beginning AND it isn’t as difficult as it seems when you hit the wall
we can give you a lot of “Technical and boring advices” but none of them would really help you to understand what you would like or what you would enjoy to do… surely an alternative character, flexible between hunting/gathering/exploring will help you to understand all the mechanics and be able to explore various planets, explore surface and caves, sell to request baskets of other shops will help you to understand prices and how to farm coins… remember that you can befriend your alt character in the beacon and give him permissions, so you can craft an iron slingbow, put it in the storage and pass by with your alt character
So long and thanks for all the fish