Is it normal to feel scared starting life on my own after a breakup?

Even though my ex and I have been apart for quite sometime , I am still living in the house that we bought together and now I am selling this house very soon and trying to figure out where I want to go. I figured I’d move into an apartment or condo or townhouse , I don’t need anything fancy just cozy. I haven’t really been on my own for a long ass time and I feel nervous and scared to do so , my brother offered me to move in with him in Upstate NY but I don’t want to far from my adult kids’ so I plan on staying in the same area once the house sells , which more than likely will sell fast because it’s a nice home and property that my realtor said a lot of people inquire about. I should walk away with a nice chunk of money enough for me to settle down somewhere else , I am also ok with leaving my job because it isn’t what I really want to do. So is it normal that I feel nervous and scared starting this new chapter in my life
Is it normal to feel scared starting life on my own after a breakup?
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