I can only speak from personal experience with Disk Warrior. I have never had it cause damage (and I have always let it do whatever it wants without modification because I never found anything wanting) and it has gotten me out of trouble on more than one occasion. I can't guarantee that it will solve your problems but I think that it has a better shot at it than anything else.
Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365
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