What do you mean that it is quite broken and can’t interact with anything?
I can only walk around, i read that you should use LMB and RMB to interact with items and machines but it doesn't do anything
You have to figure out what items go to what machines. For example, in level 1, the axe has to be divided with the guillotine, then take the head of the axe to the furnace. That is the main loop of the game with many different types of items.