@Convict, first off, kudos for making the turnaround. In light of some of the initial mentions, becoming an entrepreneur, have you considered " the best of both worlds"? Start a consulting company where you can offer your services to some of these bigger houses, but instead of fielding the difficult issue around the many questions, and the almost certain "crim check" offered by most of the bigger companies, I don't believe they ask for the criminal history of the staff at the company. It will be tough, and you will have to fight for the business, but I see a LOT of companies bringing in consulting houses now to fill a gap (usually because they short-sightedly retrenched too many of their workforce during COVID). And if you have a few companies that might be willing to bring in someone with your skillset.
Just as a question, what area would you consider your "specialty", I know you have not been out that long so may not have developed this yet, but perhaps your studies had a stronger focus on a particular set of skills. You may find some people in the forum have the position and privilege to sway their company your way, to try to get you back on your feet and with a proper foot in the door.