what i am mainly asking by this question is that were the laws of physics same when the universe has less entropy in the very beginning to right now when its has a lot more entropy
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“The laws of physics” is a bit of a vague term. There are well-established theories in physics that describe systems going through substantial changes in entropy. There are also some models that describe a system that is in a fixed-entropy state and would need to be modified to describe something else. There is no single universal theory of physics, and if there were, then surely it would have to cover everything.
There were certainly processes that went on in the early universe that don’t happen any more, and processes that happen now and didn’t in the early universe. e.g. today we get stellar nucleosynthesis, but in the early universe we got Big Bang nucleosynthesis. I suppose it’s a matter of debate whether you consider those to be different “laws” or just different things happening within the same “laws”.
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