The good news is that as a through-ticket, if you miss your connecting flight, it is the responsibility of the airline to get you to your final destination (at no additional cost to you). This could include an overnight hotel stay if there are no further flights that day.
I’ve been in a similar situation where time was tight to make the connecting flight, knowing this, airline staff guided me to the correct departure gate – but I still had to go through the security rigmarole again despite not leaving air-side of the airport.
Listen out for the announcements towards the end of your flight as to which departure gate you need for your connecting flight – since there will be no display air-side of flight destinations and gate numbers.