You can “sell” worthless shares so that you can claim a loss. Try this one: https://www.delisted.com.au/sell-your-worthless-shares/There are others - I’ve no experience with that company so use care.
HYT Twiggy Forrest to acquire 40% of native hydrogen explorer – not long after putting Fortescue Future Industries to sleep
I88 Infini rolls on with soil sampling at Portland Creek not long after making possible 'uranium history'