macbook pro 13 TB 2016 wont close after usage

Hello there, i have model MBP 13 2016 bought in 2017 with TB, and i noticed after years the battery is 100% swollen on bottom, but after hour, two of work i won't even properly close macbook, i mean display with body, really close it as laptop.

When i do so, there is still like 1cm space like the display can't really close and the laptop, and after like hour when i come back it's closed, like something is gaining space inside of macbook....

What sort of expensive magic is that?