If one is learning Halacha and comes across a machlokes between recent Poskim (post Mishna Berura eg is one allowed to make a tea in a Kli Shelishi) can one decide by himself to be meikel if the logic of one of the Poskim resonates with him more. Can sources please be provided.
Furthermore, it is quite common that people will listen to a Halacha shiur by a Rabbi who is not their specific Rav such as a shiur between Mincha/Ma'ariv or online etc about a specific Halachic topic which they may not know too much about. Isn't following the Halacha from such a shiur (without consulting their main Rav) the same as the case above (Not having a specific Rav) yet many people will do the latter and not the former.