I wouldn't change much. Different for me compared to a lot on this thread, joined the RAF which was brilliant, in most ways. Certainly for life experience and employability outside aviation. On the whole loved seeing a lot of the world, and flying in some of the most dynamic situations you can really find yourself in whilst flying these days.
Transitioning to the airlines was reasonably straightforward, but only have one company to base my experiences on, and they've been great to be honest!
Unfortunately there is quite a lot of luck involved; I've been lucky with timing both with joining the RAF and with joining an airline pre-COVID.