Generally, ferns can be propagated best by dividing the crown prior to active growth in the spring. As it is, the fern will pretty much separate itself for you along an old growth/new growth line, then you simply peel the crown in half. (If this is an outdoor fern, you'll be dividing when the weather is still cold, so you'll want to protect the new divisions). Josh

I find they're quite easy to deal with. If you expose the rhizomes just cut them leaving enough roots on each piece. They're very forgiving provided you don't stress them with too much direct sun and lack of water. Those rhizomes allow (for a fern) a bit of drought tolerance. In my garden I have several different types but one looks identical to yours. It flourishes in the wet season but completely dries out and loses all its fronds for about 4 months during the dry season. When the wet season returns it comes back with a vengeance. They are tough.

Sorry to be a bore and just do a copy and paste answer like any mug can do but I can't help but feel that the problem with Kangaroo Paws is that they are difficult. So, it's not you, it's them. Here's a snippet on their care: Cultivation Requirements In general kangaroo paws grow best in well-drained soils in a sunny position. Well-composted organic matter will improve growth. It is advisable to regard kangaroo paws as short-lived plants. Experience at the Gardens has shown that plant performance declines after 3 to 5 years. Some species, for example, Anigozanthos manglesii, are best considered annuals. Dividing the clumps will help retain vigour. Some organic matter should be added to the soil after division. Most species are dormant over winter (some die back completely) and it is important not to over-water at this time. At the Gardens, kangaroo paws are cut back to within about 10 cm of the ground in late winter. In this way diseased and frost damaged leaves are removed, reducing the chance that they will harbour pests and diseases. https://www.anbg.gov.au/anigozanthos/index.html

I have found that Anigozanthos is quite long lived especially in neglected areas or areas that did not and do not receive wonderfully rich organic compost applications. That first photo is a commercial shopping center bed that was planted about a decade ago ( Hopmonk Brewery in Novato ) . It receives some commercial level maintenance attention but it is not lovingly cared for by a home gardener ( no disrespect to commercially cared for landscape companies) . The second image is of a residential project in Belvedere that was also planted about 10 years ago. It has not received 'attention to detail' maintenance over the years yet the Anigozanthos is doing well . The Leucadendron Jesters have not been adequately pruned and are out of scale now and looking rangey. I have some 'neglectful' areas in my own experimental home garden. Some of the kangaroo paws are going on 15 years old and still bloom despite the poor soil and infringing shade from the overhead oak trees . I believe that true to their native habitat that the Anigozanthos prefers lean soil fertility conditions and good drainage for it to be successful in the long run. Good gardening to you.