Which hero shall i unlock?

Hi,


I have only collected 39k credits so far. However, haven't unlocked any of the heroes.
Actually, i am somewhat scared to make a bad decision about it.i do not want Chewie, Phasma for now. Apart from them, choices are vast. Tough to make a right decision obviously.Among the remaining options, i can not seem to click on any between Luke, Vader, Leia, Finn or Palpy.
What should i do?

Please help.

I didn't find the right solution from the Internet.

References:
 xcbfjont-forums.ea.com/discussion/
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Thanks