Should be better...
@rudy, The emi filter I used was just to get an idea about the space it takes but I'm not sure for what frequency range, ... I should choose it.
Here is the datasheet. https://datasheet.lcsc.com/szlcsc/Huaxin-S-T-RFBPF1608070A0T_C201801.pdf
Also, I put all the power traces to the bottom layer, is it a good idea to expose the copper and apply a thin layer of solder ?