How to solve a hard problem on a macbook?

Question

Hard disks

It was like this:
I decided to install Windows through Boot Camp (yes, Windows is always evil), everything was ok.
Two weeks later, I urgently needed to wait for Windows, and through Boot Camp I started formatting and merging partitions.
Everything was ok, but after 15 minutes the MAC hung at the very end, I sat there for an hour, I decided to restart the Mac.
At first, I suddenly started to load a line like in Windows, like just a black screen and a gray inscription, as it was before.
Then I booted up via opt + on and everything seemed to be ok, it booted up, but I have space in the air and I can’t expand my main disk (
Gentlemen, what can I do in this case, I’ve been sitting with this garbage for a day.
Thanks in advance for answer.

Answer 1

I urgently needed to wait for Windows

It's not entirely clear what your task is.
Since it is not entirely clear what kind of failure you have experienced, in general, I would advise copying the data somewhere, formatting the disk and installing everything from scratch, if possible.
Alternatively, you can also make a disk image in order to roll back to the current state if you wish.
Also, if you do this, it would not be superfluous to run the SSD check, but I can’t advise good utilities for this under Mac, only for Windows.
In any case, "just in case", make a backup copy of important data while they are available.

Answer 2

Try disk utility to check the disk and partition.
Then you can try to resize.