But some photos are present up to Jan 15 and then from there there was not even single photo and video pls suggest me what to do to get my photos and videos back
Welcome to Android Central! Were you regularly backing those photos up to your Google Photos in the cloud, as described here? https://support.google.com/photos/answer/6193313?co=GENIE.Platform=Android&hl=en. If not, and if the photos were only saved locally on the phone, then they're lost -- sorry! Although Google Photos backup can be automated, you still have to set it up properly at first.