Always keep good relationships with previous boss. Get recommendations for your past experience
Emphasizing your ability not your experience
If you gained some well known global recognized certifications in your field, highlight it. —- this one I would say be careful: just you have some cert doesn’t necessarily prove your practical skills, find ways to link your real world experience during the gain certifications.
Prepare to handle rejections, especially you sent out lots of applications
If you got an interview, always be yourself in the interviews.
Be honest and be yourself doesn’t mean you don’t need to prepare and say the right phrases when answering questions.
Know what you wanted and what you like to do. It’s important to do what you like to do.
If you have choice not to leave your current job, keep it while seeking other opportunities.