Whatever the case may be, you can create separate accounts and share a PC without oversharing.

Create Separate Accounts on Windows PC

The advantages of setting up separate user accounts are:

You can set up accounts with different privileges for each user, and keep an eye on how they’re using the PC.Each person sees their own Start screen, apps, an account picture, and settings when they sign in.Your personal stuff (like your Mail inbox and Calendar appointments) is kept separate, too—nobody else can read your email.Multiple people can be signed in at once. You don’t have to close all your apps and sign out to let someone else use the PC.

You can create separate accounts with Microsoft. Just visit this link and set up a new Microsoft Account. Alternatively, if you would not want to use Microsoft account since you don’t like entering a complicated password every time you use your PC, try setting up a picture password or even a 4-digit PIN to make things easier. 

Although Local Account requires no email address to verify a user and can be used without a password, it exposes certain exploitation avenues.

First, with a local account, your preferences and settings don’t update automatically or roam with you when you sign in to other PCs and devices. This makes it compulsory for you to sign in each time to the Windows apps that come with your PC (like Mail, Calendar, and People).Secondly, you can’t download or purchase new apps from the Store without a Microsoft account.

You might prefer a local account more for your child if he or she is too young. It could certainly allow him/her to experience and enjoy the PC without being exposed to the wilderness of the web. One can also activate the Family Safety feature on a local or a Microsoft account for more safe use of the PC. Read: Complete Guide to Manage User Accounts in Windows 11/10.