Is it better to block the two doors of the second bedroom and block the door on the sofa background wall and use the balcony door?

No

It is a bedroom other than the master bedroom. Generally, contemporary master bedrooms have independent bathrooms, while the second bedrooms generally do not, or are smaller in size. Although the second bedroom is not as large as the master bedroom, it is also a place for users to rest, so the design must be private.

You can use wardrobe design to block people's sight. Designing a wall wardrobe when entering the door can be both practical and effective to increase privacy. Most families use this method. Although the second bedroom is small in area, it is also the room where people live their daily lives, so the design must also be convenient. On the one hand, the design requirements of bedside tables and wardrobes are reasonable and easy to take and place. On the other hand, sockets and switching power supplies must be designed properly and placed where people can easily reach them, such as in front of the bed or beside the door.