I tried Venigar baking soda plunger
No use
Hello @umch
Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your clogged shower drain.
Please note that plumbing work needs to be completed by a licensed professional for safety and compliance.
Before using any mechanical aids, I suggest trying out https://www.bunnings.com.au/drain-cleaner-drano-1-2l-max-gel-liquid_p0404021 . If you suspect that the clog is caused by hair build up or soap scum this cleaner should be able to clear it out. Your next option is to use a mechanical aid such as https://www.bunnings.com.au/kinetic-180cm-drain-unblocker-skeldings-wire_p4900031 . However, if the clog is being caused by an external factor such as tree roots, I suggest engaging the services of a plumber as they have the necessary tools to cut the roots inside your plumbing.
Here is a handy step-by-step guide: Unblock and Clean Drains
Please remember to wear personal protection such as gloves and goggles.
If you need further assistance, please let us know.
Eric