Hi there, @Aero212. I appreciate that you're keen to get your phone connected to Wi-Fi again. Our colleagues from Samsung Philippines have created an excellent guide on steps you can follow to resolve this:
Please let me know how you get on.
Hi @Aero212 Just an other idea not mentioned in the article @PaulM1 posted , if solution not found after trying them. Go to Settings - Connections - Wi-Fi - Tap the cog next to your router on my device it is under view More but could be Advanced if that does not show. select the MAC Address Type and set this to Phone MAC. If the issue persists, I would suggest pressing the Volume Down and Power buttons together for around 10 seconds until the phone restarts, the reason being that this will refresh the software and address any issues that might be causing problems.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .