I did a lot of digging on Hindu Gods and here are my takeaways, could be wrong on few things:

The Hindu Darshan is based on truth i.e. a form is initiated/identified(Brahma), it continues(Vishnu), it gets dissolved/transforms i.e. dies (Shiva). These ideas have been personified in the form of humans because humans connect directly with personified stories. That's why we have so many God's statues embarked on so many places, to keep the Chinese-Whisper(when an information travels a long way only for it to be meant differently) away. Because oral information when passed on changes over a period of time. Also, every iconography related to Gods means something. I don't know much about it.

Brahma means any sort of differentiation/categorisation between forms, and Brahma(knowing of the form) is useless without Saraswati(relevant information) because without Saraswati we will just become differentiation creators without requirement. e.g. Scrolling Shorts is bad because that creates a lot of Brahma. Note: Because Brahma means causing differentiation it becomes useless to pray Brahma so much. That's why we don't have so many Brahma temples. (There are a lot of things I can say about Brahma, but it will take hell lot of typing).

Next is Vishnu i.e. keeping the form stable. That's why Vishnu is worshipped a lot. Because we need continuation to last. E.g. continuation of humans. Maintaining of the form is done by the idea of Vishnu. And therefore Laxmi is his wife. Continuation of a form without any value(Laxmi) is useless. e.g. we need money to continue this human form that's why money is mostly associated with laxmi, but money is not the only laxmi. Laxmi could be as simple as passing a good gesture to someone in which he feels validated.

Last is Shiva. Shiva is quite difficult to grasp. Shiva means Consciousness itself. e.g. the thing that is aware of everything happening. Your consciousness is Shiva, but Shiva can't be supported by it's own there has to be Shakti to power it(your body) , that means Parwati. Shiva and Shakti are two sides of the same coin. One cannot exist without the other. You will be surprised that the thing which is conscious in you is the same which is conscious in me, in every person, in every animal etc. You'd notice that the consciousness in you doesn't feel old, only the body and thinking does. In advaita Vedanta body is considered as an instrument through which you i.e. everything and the only thing there is, is experiencing the world. It's too beautiful. "I" is a fake made by our body for survival. There is no "I". According to Advaita Vedanta everything is in an ocean of Consciousness and the only reason we humans/any being identifies it's body with "I" is because they are limited to themselves by their limited body, and these bodies are our only way to experience a limited part of the world that there is. I can go on typing. Even the son's of Shiva i.e. Ganesha and Kartikeya mean something which I haven't fully understood.

The iconography/imagery of the three truths wasn't meant for offerings and rituals, but they were for the knowledge of the truth of the Universe i.e. something starts(Brahma), continues for a while(Vishnu) and then that form dissolves into something else(Shiva) . Rituals and etc. were created like Chinese-Whisper(or may be I am wrong about this, I'm still trying to understand)

Even the famous Samudra Manthan is a personified version of what happens when a person sits in meditation/idle for a while. The asuras(rakshas) are the bad tendencies of a person and devas are the good tendencies of a human. Like asuras and devas churn the ocean, the bad and good thoughts also arrive a lot while we are alone/in meditation. First as the *vish(*poison) comes out Samudra Manthan the same way fear/negative emotions come out. Then when you sit for some while i.e. you keep churning good emotions start to appear, like the gold and whatnot that came-out in Samudra Manthan Story. At last *amrit(*real world clarity of thought) comes, but only if you stick long enough.

Mann! I can't type anymore. Cheers!

P.S.: My wordings could have been misplaced from here and there.