try 5g only mode and switch off smart 5g… You can do it by dialing *#*#4636#*#* >phone info>select slot (phone 0-1)>scroll down there will be a menu there will be NR/LTE/HSDPA selected change it to NR ONLY…
You can try this…if this works then fine and if it doesn’t work you can change it from setting by changing 5g to 4g and back to 5g…
Airtel network in general causes network issues…