Lost sim in Australia

I am travelling around Australia and have lost my sim card and I need yo access e mails linked to my mobile number in the UK, my mobile number with Lebara is 07562156347 and I have a current mobile number with Optus in Australia, that number with Australi international calling code is 0061402220938. Can you help please. My email is [email protected]

If your phone supports esim you could ask Lebara support to convert sim to esim