How to recover my missing photos back from android phone?

Hi there. Recently, I faced a problem on my android device. I took the pictures with my phone camera. After few days past, I found out that the pictures I took before all have gone. All photos taken by camera gone except the pictures from social networks. Could you please give the suggestion how to recover back the missing photos? I have tried a lot of recovery apps like Dr Fone, DiskDragger and Phone Rescue apps. All did not work at all. Is there any idea to recover all my photos back? Please advise. Thanks

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