Depends, if there are recognized certifications those always help. Otherwise, your previous work does matter. I’m sure it’s a terrible experience, but it’s still possible.

Email aliases, password manager, debit card disposables, and put in fake info on websites. Anything more is unnecessary, unless you do high level work

If there is something you want, create it. Lemmy is new, and there are not a ton of people posting. Someone will need to do it first.