Music Banter - Lazarus, but probably not Lazarus

I have this file named "Lazarus.mp3" in my computer from, like, 15 years ago. The tune is familiar, and I have a distinct memory of googling about it before naming the file. The results said something about it not having a clear author, thus the lack that part in the file name.

Now, I'm preparing a classical music video, and since this file stays in the Classic folder, I dug it out again. However, the sound seems to be quite... modern. To double check, I tried to use several different key words in search, but got absolutely no additional info about this piece. Using rhythm machines, I managed to get the exact same music but with totally different name: "First love is always pink".

The musician who produced this online piece is a Chinese, and the album has a 2021 date, which means this is very likely a theft and not the original. However, I can't investigate any further. Could you help? I don't care about this Chinese, I just want to know the true name and author of this piece, to determine whether it's classical or not. Thanks!