summarize the following in simple terms

1. It lacks scientific rigour.
2. It is vague about how the concept of self-actualization is derived.
3. It has been challenged for its rigid structuring of higher-level needs.
Critics have pointed out that people tend to differ in the value they
place on some of the levels of need. For example, some people may
consider that developing a relationship (a love need) has priority over
high academic achievement (an esteem need).
4. In collectivist cultures, the notion of self-actualisation may make no
sense at all

Critics say that the concept of self-actualization is not supported by strong scientific evidence and it is not clear how it is determined. They also argue that the hierarchy of needs may not be universal as people prioritize different needs. In collectivist cultures, the idea of self-actualization may not even apply.