[D] Regret leaving a good remot ML/CV role for mental health and now struggling to get callbacks

I am a Computer Vision and ML engineer with over five years of experience and a research based Masters degree. A few months ago I left a well paying remote role because the work environment and micromanagement were seriously affecting my mental health. At the time I believed stepping away was the right decision for my sanity. It has now been around three months and I am barely getting any recruiter screens let alone technical interviews. The lack of callbacks has been extremely demotivating and has made me start regretting leaving a stable job even though I still believe I needed the mental peace. I am applying to Computer Vision ML and Perception Engineer roles and I am based in Canada but open to North America remote roles. I am tailoring my resume and applying consistently but something is clearly not working. I am trying to understand whether this is just how bad the market is right now or if I am missing something obvious. If you have been through this recently I would really appreciate honest advice on what helped you start getting first interviews and what hiring managers are actually looking for right now in ML/CV positions I am just trying to get unstuck and move forward.