A family of Microsoft relational database management systems designed for ease of use.
Microsoft has tried at least twice to deploy "webified" versions of Access. In 2010, they were called Access Web Databases. In 2013, they were called Access Web Apps.
Both attempts ended in complete abandonment of the concept.
In addition, Microsoft has deployed Power Apps as part of the Power Platform in MS 365. They fill the niche one might have expected for a "web version" of a small, limited function relational database application.
It's highly unlikely in this environment that there will be any further attempts to run Access "in a web version", but you do have to have some understanding of the history of Office and Access to realize that.
In addition, as has been noted, running Access on a non-Windows OS is not possible, although you can install a Windows emulator application on your Mac and install Access in that Windows emulator.