I've found my bench typically improves after a period of rest after high volume for a while. Similar for squats and deadlifts to be honest.
If you're starting a new programme, check out the GZCL method as it's pretty customisable to whatever you want to focus on. You could therefore set out a programme with a greater focus on stuff for bench such as bench variations and upper body accessories.
Also, it probably helps to remember that it is much more difficult to make progress for bench, especially as a girl, and you have to be quite patient hahaha. I've been lifting 'kinda' seriously for almost a year and a half now and over the past half year, I would say I have probably only added 5kg to my bench (from 57.5kg ---> 62.5kg, maybe 65kg without the pause required for powerlifting competitions).