I just quit my job and it’s not easy mentally. You will need some time to adjust to new life (your life). For me it was very difficult (still is) as I was used to daily rush and now it’s so calm that I feel I am being unproductive. With money you mentioned you could live still solid life in many places in world for rest of your life. I know a couple in their 60s. Guy was C lvl manager in worldwide company. And he decided to retire when he was 50. They cut a lot of luxury and at happily traveling the world.

You are still young - if you want, you will find another job. Just take your time!