Well , i have a garuntee profit method which takes time , so do read if you wish to learn.
Firstly , if you have more than 10 dls , i suggest you put aside 8 dls for the 1st part , you buy quite a few dirt farms at 6-7wls each , then buy lgrid seeds (46-50/1) , plant them all in dirt farms and sell them for 75-80wls once the seeds have grown to "Ready to be collected" , each farm you would've spent approximately 62 wls (55 wls for seeds and 7 wls for farm) , you profit 13-17 wls per farm sold , more farms = more profit.
Secondly , whilst waiting for it to grow ( 3 days , 15 Hours ) , go use some wls/dls to buy sugarcane block/seeds , and farm them normally , 120/1 for blocks and 27-32/1 for seeds , sugarcane is hella farmable , with only 4 Hours growth time , decent gem drops , 2 hit to break blocks , and relatively "expensive" imagine a day farming it 3 times , you get tons of profit until your lgrid farms are ready , then profits shall be moved to making more lgrid farms in the future!
Thanks for reading , this profit goes to poor and mildly rich growtopians , if you cant afford lgrid farms , you can always start with the second method until you have enough for both!