Can I reach out after months and years to get references?

After being laid off due to the pandemic, I haven’t worked in my field and just worked some odd jobs the last three years, of which the last one ended 3+ months ago. I haven’t kept in contact with anyone I used to work with due to severe mental health issues I’ve had during this time. Is it ok to reach back out and ask for references? What do I even say? Just thinking about it makes me nauseous. I would be extremely grateful for any advice.

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