My existing bathroom floor has tiles like shown in picture. I want to install interlocking luxury vinyl floor planks.

1. Can I do it over existing floor ? if yes, Do I have to fill bevel edges of the tiles with anything to level it ?
2. There are some spots where one or two tiles are not completely leveled with surrounding tiles, Can I chip/sand part of the tiles to level that ?

[![enter image description here](https://i.stack.imgur.com/6ll8G.jpg)](https://i.stack.imgur.com/6ll8G.jpg)