Sorry to hear about this. It is never nice to hear about someone struggling.
You may need to consider letting time do the heavy lifting on this. It seems clear that you have failed to clear the PhD hurdle several times over the last 3 years. It is telling you that perhaps you are not ready for this just yet. My advice would be to take a break, be brutally honest about why you have failed this time and maybe go and something else for a few years before trying again in a few years.
There is no shame in failing a PhD. Many do.