We are committed to provide you with the best wireless service possible (https://www.verizon.com/support/troubleshooting/smartphones/), mcdowns22. You mention that this signal issue stated about 3 weeks ago. Are you aware of any changes in your area that may be impacting radio signals like new buildings that may be blocking the signal from the nearest tower?
Have you done any structural changes to your home, like a new roof?
Do you notice any improvement if you steps outside your house?