Poor Signal

Hello, all of our VZW have low signal at our house and in our neighborhood.  When we bought the house in 2013 even the real estate agent told us this was a problem.  I figured eventually that would improve as more cell towers are built, technology improves, etc, but it has not improved in 8 years (almost a decade!). I like r in a suburb of Boston, near the 128 train station, a major shopping center, and a major highway interchange, so not in the boondocks, except in the boondocks as far as VZW signal is concerned.  Please are there plans to improve this?  Calls are dropped, voice recognition software does t work without signal, music streaming doesn’t work, etc if not on Wi-Fi.  Zip code is 02090