My phone's battery drains very fasta fter android 13 update. I leave 70% battery at night and find 24% approx in the morning on daily basis. Can anyone tell the reason? And when is next security patch update releasing?

Can anyone please tell what was the recent security patch level for the amsung A51 last software update, and is the next one coming out?

My samsung A51 battery draining too fast after ghe last update and the apps are hanging or slowed many times. Please tell when is the next security patch coming out and how can i prevent my phones battery.