Please urgent! Help with humidity in terrarium

[Hugsplox]

Or is the room just always humid? You might need a dehumidifier for the room. I have a weeping foundation so I have to have a dehumifier or else I would get sick. You got to remember about your health and the snakes health. If your living in a room above 55% humidity you can get mold problems and thats not good for your health or the snakes.

I'm not sure there needs to be concerns with the entire room. The most obvious issue here is not letting substrate dry out a little before putting it into the enclosure, Occam's razor and all.

I had ordered a very cool smart/wifi temp/humidity before take the python but unfortunately in my country we have some problems with delivery caused by covid... So it is in shipping yet.
I have the snake in my room, I have a very small house so it is the only place in which I can put him but sincerely I have no idea of how much humidity I have in this room... I never had humidity or mold problems in the room, I think it's just the terrarium that isn't good for a snake (I didn't buy it, the old owner gave me with the python). In any case I buyed the materials for build a better terrarium but for now I have to do all with the old.
I have a air conditioner in the room with dehumifier, tell me if I can use it.
It's just an idea, but I leaved in the sun (i put on it an insect screen) the rest of the coconout fiber that I buyed for the terrarium. I think that in a week it should be dry. It is better to change the old humid fiber with this more dry? It's the only solution that I have in mind, for now.
In any case here some terrarium photos.
https://ibb.co/yNWft51
https://ibb.co/Vqx484n

I'm glad you're planning on building a new enclosure. Not to jump down your throat, but looking at these pictures there are some serious short comings in your current set up. Rather than type a novel out for you to read through, I highly recommend you dive in to the pinned threads in the BP Husbandry section and take a look at some of the information there. Right off the bat I only see one hide, and to be frank that enclosure looks small so I'm not sure what kind of temperature gradient you have going on. There's a ton of great information in those threads, so take some time reading through them and feel free to ask questions, that's what this site is here for.