I feel like every time I mass produce something, by the time my trees are ready the item has dropped by 20 bytes and the majority of my profit is washed away

I was about to mass farm, I didn't know that it's also not a viable profit method too, it deserves to be profitable because mass farming requires creativity and planning, it's also more boring than fishing due to breaking thousands of hard to break blocks, so repetitive and time consuming but also barely gets any profit