Important to mention that Neoliberalism is a therm not really used by people by people who defend liberty, capitalism and free market policies. It’s not something academic for example. Basically you won’t find liberals calling themselves neoliberals.
It is often used by people that does not agree with liberalism, sometimes in a pejorative way, other times to aggregate a group of heterogeneous people, and sometimes mixing different policies and aspects of modern western societies.
Citing the Wikipedia article that explains and has sources on this:
The term has multiple, competing definitions, and is often used pejoratively.[21][22] English speakers have used the term since the start of the 20th century with different meanings.[23] However, it became more prevalent in the 1960s, 1970s and 1980s; it is used by scholars in a wide variety of social sciences,[24][25][26] as well as by critics,[27][28][29] to describe the transformation of society in recent decades due to market-based reforms.[30] The term is rarely used by proponents of free-market policies.[31] Some scholars reject the idea that neoliberalism is a monolithic ideology and have described the term as meaning different things to different people as neoliberalism has mutated into multiple, geopolitically distinct hybrids as it propagated around the world.[32][33][34] Neoliberalism shares many attributes with other concepts that have contested meanings, including representative democracy.[35]