I think both of them are true.
But I want to think positively, so believe it could give many chances to beginers = beginners. / However, I prefer to be optimistic, so I believe it can provide many opportunities for beginners.
Some jobs are gone, and some jobs are coming.
For this situation, we should be ready to change our careers often. = Certain jobs disappear while new roles emerge.
In this environment, we must be prepared to adapt our careers frequently.
Only one kind of job in one's life is rarely possible thesedays = these days.