Mobile friendly website

I work from my office iPhone frequently, and it is very frustrating that the website is not mobile friendly. Although I am able to log into it from my phone web browser, the website does not adapt to the format of a phone well and is very clunky to navigate/many of the buttons and drop downs don’t respond accurately on the phone. I’ve experienced this on both the volunteer and admin side. All around this is a problem that needs resolution for all users. Many people don’t use computers the majority of the time now.