Very new to pool ownership. My setup is the smallest you have been probably seen - living in UK - not much space

The current pump I have is a Bestway Sand Filter 500gal, doesn't provide much suction, so I can't use a skimmer, nor pool vacuum.
I purchased an Intex Krystal Clear 1250 Gal Cartridge #28636 Filter Pump, however it comes with what looks like 38mm thick hoses with screw ends. So, how do I get this too work with my Bestway pool please?
Your help would be very much appreciated - thank you.