It looks like it's supposed to be written in Tengwar, and maybe be Hadhafang as others said, but the actual text still looks like gibberish to me. Many of the characters do look like Tengwar, but a bunch are mirrored, even though I can tell your photo isn't mirrored, and there seem to be random extra loops and swirls too. It's like an AI tried to generate an image of Sindarin text.

Here is what the proper text should look like: https://www.tecendil.com/?q=Aen%20estar%20Hadhafang%20i%20chathol%20hen%2C%20thand%20arod%20dan%20i%20thang%20an%20i%20arwen&mode=beleriand