Sorry you and others are going through this. The short stints when they are a repeating pattern are a problem. That’s not what you all want to hear but hiring managers ( and HR ) are under pressure to manage turnover. If there is a concern of flight risk in 12-18 months that limits hiring because the candidate may be gone before they return the value of recruitment, salary and benefits. The short stops may not be your fault however your resume likely doesn’t reflect that. You mitigate by headlining why you were let go/ laid off and best if you can share what % were laid off with you or why you left involuntarily ( I had one today claiming being part of a layoff but the company has only shrunk by 12 people in 4 months so he got bounced). If you left on your own volition try to frame it as a positive and not to be a complainer ( no one hires a complainer). If you have multiple short stops and all are voluntary terminations, I have some bad news for you…
Also don’t tell someone that you’re looking for a home and a place to plant roots. It’s trite and very few hiring managers believe that. Do your research into the role, company and market and have an honest and sincere reason why you want the job and the value you can add.
Good luck to you and others