In a previous Q I didn't explain myself well. I join the prayer in the masjid and the imam goes to sit. I have no clue of it's if his 1st or 2nd. Do I recite the 1st or 2nd myself? Sometimes Imams take very long and I find myself reciting the 2nd but then they stand up

Ustadh AbdulAziz al-Haqqan

You explained yourself well, say the whole tashahud and if you finish the complete one start making dua.