Good morning first you must download this rom from sammobile
G998U1UES5CVHB or
download from this page it is seen that the download is fast
G998U1UES5CVHB for SSP
you must download this
Samsung Firmware Easy Tool (v1.1.0). program to install on your pc so that you decrypt the rom and you can flash through
Odin I leave you the links in blue.
Once all that is done, you just download beta 1 there and do the process of updating to android 13, your phone will be unlocked, there is no problem flashing this U1, do not be afraid, your phone will be fine if you do everything that I mention, greetings from Ecuador.