What are some of the difficulties a 24 year old might face in articleship?

I will be starting my articleship from next year after giving my intermediate exams in May 2025 and I'm quite nervous thinking about so many things - will I be able to land and articleship in BIG4 or other good firms like BDO given my age, will they be willing to hire me over a candidate who is just 19 / 20 / 21 year old? And if end up getting in the organization will there be other difficulties that I may end up facing ?

I know some of might say that I am overthinking this and I should be focusing on studying right now but this thought has been going on for a while in my mind and I just want to prepare myself for what it is going to be like.

Please share your honest thoughts and. experiences.