You can do a lot to increase your chance
such as get few flying hours, join HKYAA/DACP/AAEP, do some volunteer work.
If you show the passion and attributes in the interview, your chance is quite high.
Focus on packaging your aviation story and learn to think positively and practically.
If you cannot ensure the seat even with CPL, why don't you give a go before you go to get your CPL license.