In RLCraft, the normal order of "cut down a tree with a fist, make a brick" is not working. First, find gravel, cream and sticks, make a silicon knife, cut a vegetable fibre, and collect a toporic. Then secure the rebirth point, prepare water and treat. The first iron is useful only with the skills that allow it to be used.
The separation refers to the official RLCraft 2.9.3 on Minecraft Java 1.12.2 with Forge. The RLCraft Dregora and the side changes have different conditions. Set the whole modpack: the list of mods without its configuration and modified recipes does not reproduce RLCdraft. The author indicates Forge at least 14.23.5.2860; take the recommended set from the modpack file itself.