Get old viber backup

Hi everyone. I need to get some old messages from my Viber. In viber Settings>Accounts>Viber backup>Last backup shows as 07 June 2020. Is it any possible to get 06 June 2020 file. My mistakenly i have deleted some important messages in viber. 06 June back up it has. How can i get that backup. Also i don't know last back up stored in where? Iclode or google. Please help me.