Congrats on your new phone and welcome to the Verizon Wireless family Artist28374. I can understand the frustration of having service issues. I'm sorry about the problems your're having. We can troubleshoot the phone and investigate the area. What is your zip code? Are issues only inside your home? Have we filed a trouble-ticket that investigates your issue with our technicians?
Yes a network extender is helpful for inside the home. Here is a link with some information about this accessory https://vz.to/2NSPl7E . Once you receive the Network Extender (booster) it comes with instructions for set up but we are here to help. If you're considering a booster that has to be installed outside the home, your landline carrier would install that kind.