Can we convert any given turing machine to a turing machine with only 2 states? if so, how? So i remember reading somewhere that we can convert any turing machine into a turing machine with 2 states (or 3, i don't remember) but there was no proof for it and i couldn't find it either

So my question is :

For every turing machine, what is the minimum number of states that we can have after converting it to this minimal state turing machine?

and what is the properties of this turing machine that we have converted our original turing machine to?is this a standard turing machine or we do this by increasing the number of tapes or...? ( how is this possible?)

What i mean by convert is build a Turing machine which accepts the same language but only with 2 or 3 states
You can't always find an equivalent Turing machine (in the sense that it has the same language) having less than $N$ states.

Note that the semantics of a Turing machine is determined by its states and transition function. After fixing the alphabet, to fully describe a machine you only need to specify how it reacts to every symbol from every state. This description has length of $O(|Q|\log |Q|)$. Thus, if you bound the number of states by some constant $N$, then there's only a finite number of different machines ($\sim N^N)$, which means that not every decidable language has an equivalent machine in this set.