Buy a smaller pool? :-)
More seriously: Ours only draws 15A, or can be dropped down to 10A if you don't want the heater running when the pump is on high.
We had a 15A supply fitted by a local sparky, took a couple of hours to a new RCD/breaker on the "fuse" board*
We bought a TrueForm from a local supplier: https://www.trueformspas.co.nz/
A quick check on their website shows even some of their larger pools still only need a 15A feed; so it may pay to compare manufacturers.
* There are no fuses on that board, it's a new house, they are all breakers and RCDs; but terminology!