No tretinoin for me.. but I can try tazarotene

Hi everyone! I've tried different concentrations and frequencies with tretinoin but it irritates me too much and breaks down my skin barrier. Now, I would like to try the Taz, but it's really new to me. If I knew a lot about tretinoin, I know nothing or nothing about Taz. I await your best advice. Which frequency and percentage is standard and which is best for starting out lightly? Should Taz also be prescribed? (I live in Italy) Unlike tret, does taz also cause initial pimples? Can it be used if I expose myself to the sun? (I knew that with tret I could not get a tan for ex)