Normally, eToro retail clients can take advantage of trades up to a maximum of x30.
To increase higher leverage rates and open much larger positions, you need to upgrade your Retail account to a Professional account or migrate to eToro Seychelles.
Also note that higher leverage carries a higher degree of risk because leverage increases the magnitude of both gains and losses. In addition, professional clients are not entitled to all the protections that retail clients have under Australian law, ASIC, CySEC or FCA regulations.