Is it possible to somehow combine some faces into one?

[hexed hearth]

Yes, select the edges in-between the faces you'd like to merge, and use the "dissole edges" tool

[wind abyss]

it doesnt work for me

[hexed hearth]

can you send a screenshot of your model, or even a short video of you trying to do it?

[wind abyss]

its ok ive alredy done it

[hexed hearth]

!close