Your best bet is to continue at call centre or switch to a sales & marketing exec jobs. If you start off from scratch in f&b or hotels, I think the max they will offer is 2 to 2.4k.

With your weak academics and experience, no serious management trainee program will recruit you. And forget about the Japanese rah rah stuff, employers are not interested.

Start moving now, you have already wasted a lot of time on various non value adding part time jobs and 'learning in Japan'. Once you get older, it will be harder to get back to a proper PME track.