Magento 2 Force Customer Login extension allows store owners to hide store content and ask customers to log in if they want to access and view the detail page. Admin can set non-visibility for categories or any cms pages with a custom message. Customers are restricted to access the current page and will be redirected to another page after logging in. Let's check a list of advanced features:

- Restrict non-logged-in customer access
- Enable ''Force Login'' on specific or all pages
- Apply Required Login to default pages
- Apply Required Login to CMS pages
- Apply Required Login to custom pages
- Required Login with custom pages including strings
- Required Login with custom pages excluding strings
- Set destination page after customers log in
- Redirect customers to targeted page after logging in
- Display required-login notice on configured page
- Allow/disable visitors to create customer accounts
- Quickly enable/disable Required Login
- Manage backlist page - Force Customer Login overview
- Magento 2 high compatibility
- Product recommendations: Social Login, Hide Price, One Step CheckoutGuest To Customer
This extension is included in a list of Magento 2 B2B Extensions

Link product: https://landofcoder.com/magento-2-force-login.html/