@matanelzakzak iFixit does not yet have a guide for this. I suggest you try [https://www.nadiemellamagallina.com/en/manuales/smartphones-1/poco-1304/pocophone-f1-848/m-dulo-de-antena-con-altavoz-7348|this one] You may need to use or browsers translation capabilities, it is written in Spanish but translates perfect.
Anyhow, not complicated and pretty straight forward. Get a replacement form any of the online stores just make sure you get the proper one for your exact version.
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
Repair is War on Entropy!