My digitizer is cracked but the lcd is working fine. What should I do?

I had recently taken off my broken screen by myself and I noticed that I left some cracks in my digitizer. I turned on the phone and the LCD was still working normally. I don’t know if I should replace the whole digitizer (which would cost me a lot) or keep it as is, put a new screen on and leave it be. Please help!

Update (09/30/2018)

Thanks for helping me out with this. Here are some photos. Hopefully you can see the cracks. I tried to take off the adhesive in the center but it wouldn't come off.

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Can you post some pictures what you have done and the whole situation

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