Hi @adkandel,
It is a bit tough to be 100% certain based on your photos, but it looks like it is either clover or creeping oxalis, with me thinking it is more likely clover based on the shape of the leaves.
If possible, could you pick a few of the weeds and place them against a neutral backdrop so we can get a better look at the leaf? This will help us to positively identify the weed so we can be more certain in the approach.
If it is clover as a I suspect, then your https://www.bunnings.com.au/yates-weed-n-feed-12-5kg-weed-killer-and-lawn-fertiliser-granular_p0902419 would be effective.
If it is creeping oxalis, then you would need to use a product that specifically mentions being able to treat creeping oxalis such as https://www.bunnings.com.au/david-grays-dart-bindii-clover-selective-herbicide-250ml-concentrate_p0889215 .
Let me know what you think and if you can upload the requested image, I can certainly assist further.
Jacob
