Bootcamp removal issue

Hi, I have a similar issue that I've seen here. I simply cannot remove boot camp, I just keep getting errors.

I do not want to have to reinstall MacOS, I'm happy having multiple partitions, just want to remove bootcamp and use that space for storage.

Diskutil list presents the following:

Can anyone give me advice on any command I can use (accepting risk of doing so) to remove bootcamp and how best to merge/use the available storage.

Thanks in advance for any guidance.