Aim higher.
Start by interviewing at non-FAANGs to get some practice and build familiarity and confidence with the experience of being an applicant.
You can re-apply to most FAANGs every six months, and they either don't punish you for it or even appreciate that you are so passionate about wanting to work there.
Come to grips with and acclimate to the idea that in your new reality you won't be the top of the totem pole anymore, and your existence will be to serve your new manager and help them look good.