Hi Tiana,
Which State or Territory are you (or was your uncle) in?
Given that your uncle did not have a will, he is known as having "died intestate". Probates are not relevant here since they only apply to cases with wills.
Intestate matters can be difficult (appointment of an administrator by the Supreme Court and allocation of assets and identifying interested parties of the estate). However, it is possible to sort out matters without needing an administrator if the estate is quite small and all interested parties agree with who get what, or waives their interests. Sometimes, a bank or superannuation fund may need a letter from an administrator so you will need to go through this whole process. But if nobody is demanding a declaration from an administrator, then you might not need to go through all this as long as someone looks after your uncle's debts and interested parties agree with who gets what share of your uncle's assets.