redmi 2

hi I want a help from you
I have a redmi with android4.4.4
after servicing from a local technician there is no Google apps like - Google search, playstore, maps, ......etc..
Then I installed a playstore but after installation I can't open it(playstore), when I oppens it, it blinks and disappearing.
How can I use play store in this device.
______________________anyone is there to help me with a solution to this problem_________

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