spanish: I might have gone vs i could have gone vs i would have gone?

I might have gone, but I can't remember it now (puede que haya ido, pero ahora no lo recuerdo)

I could have gone, but I didn't want to (podría haber ido, pero no quise/ Pude haber ido, pero no quise)me

I would have gone, but they told me not to (habría ido, pero me dijeron que no fuera)

Not "habría haber ido", but "habría ido". You are mostly right, though.

Puede que yo haya ido a Roma pero quizás es mentira.

Pudiera ir/haber ido pero me decidí que no. (The going never happened. So since it's outside of experience, it's in the subjunctive)

Yo habría ido si tú me hubieras acompañado.

Good luck!

i might have gone= puede que haya ido -> CORRECT

i could have gone= podria haber ido -> CORRECT

i would have gone= "PODRIA haber ido"

good luck!

I might have gone and I could have gone can both be podria haber ido.

You were correct!

you are correct buddy you are correct dont change anything :)