During the festival of Sukkot, there are many mitzvot, one of which is the mitzvah of the sukkah. However, the entire festival, with all its mitzvot, is called Sukkot. Clearly, there are a number of virtues associated with the sukkah compared to the other precepts of the festival that justify the entire festival being named after it.
Firstly, the Mitzvah of the Sukkah precedes the others in time, since it applies as soon as the festival begins and extends until the end, whereas the Mitzvah of the Four Species only begins to apply in the morning.
Secondly, the Mitzvah of the Four Species is only performed once a day, whereas the Sukkah applies all day long, since one must live in it just as one lives in one's own house.
Furthermore, all the mitzvot of the Torah are defined according to a particular action with a particular part of the body. This is not the case with the mitzvah of the Sukkah; it does not have a specific form because, as mentioned, just as one lives and acts in one's house, one must live and act in the Sukkah in the same way. Moreover, it involves all parts of the body equally as the person enters the Sukkah.
Furthermore, our sages say that “a person without a house is not a person,” from which we can infer that even when a person is not inside their house, the very fact of having a house makes them a person. On Sukkot, when the Sukkah becomes a person's house, the Sukkah brings about a sense of fulfillment in the person, even when they are not inside it!
The month of Tishrei is a general month, providing overall strength for the entire year. From each mitzvah performed in this month, one gains strength for serving God throughout the year. What is gained from the mitzvah of Sukkah?
One of the ideas behind this mitzvah is that it gives strength to fulfill the teaching of “Know God in all your ways.” Jewish One should not serve God only during prayer and Torah study, but also when engaged in personal and worldly affairs. The Sukkah, by encompassing all aspects of life, provides the strength to fulfill this commandment throughout the year.
The Talmud calls the mitzvah of Sukkah, with all its virtues, an “easy” precept. The teaching is that when the Jewish He goes out into the world to serve God with the firm resolve that “whatever happens, I am a servant of the King of all kings, the Holy One, blessed be He, and nothing will prevent me from fulfilling His will.” All challenges automatically become easy, and he manages to make his life a dwelling place for God, even in worldly affairs. And when the Jewish He fulfills his mission, and surely God blesses him with everything he needs, in health, children, and ample sustenance.
My soul, my body, my whole being desires to serve Hashem, but sometimes I get confused, I don't know how.
It's called Yetzer Hara, the evil inclination. I recommend reading the Tanya, the foundational text of Chabad Hasidic thought. Here https://www.tuviaserber.com/category/tania/sefer-shel-beinonim/ You will find an adaptation of some chapters for children.
The entire work of a Jew in life is to struggle against and overcome that inclination toward evil. It is to illuminate confusion with the light of the Torah.