On exiting your apartment / flat count the number of doors along the route to the escape door / stair case if the landing is smoke bound crawl and count the doors .. if you know the staircase fire door is 6 doors down you can count the doors even In zero visibility / loss of lighting
Walk the stairs count the steps and make a mental note of where the door out / exit corridor is.... And how the final exit door opens.. push bar / smash glass/ break tube or however it's secured
And any other route incase that one is blocked....
Fortunately I'm guessing it's a fairly new build so should have been built with some fire doors / resistance to the floors / walls... So if the fire service is working they should be able to rescue you ... Guessing it's not that high that a ladder will reach assuming your window opens onto a street / unenclosed area a life hammer will help break the inner pane of glass
These are great
https://www.ebay.co.uk/itm/394151001907 ... media=COPY
Push against the bottom corner of the glass and it's got a spring loaded ceramic point that fires out the end shattering toughened glass easily
Then launch a chair through the rest and use the chair legs to take out the loose glass (assuming they are not escape windows which fully open???
At which point you can await rescue in fresh air .. for the cat a cat carrier and a rope / strap and lower to the floor outside
Then for you. Escape ladder ..
Ive one of these only issue with most is the maximum sill thickness but the average build should be ok 6 to 10" of this one:
https://www.amazon.co.uk/FIRST-Two-Stor ... d_source=1
Hook onto sill with ladder outside then pull the handle on the red bit that is wrapped round the rungs and it drops (secured with velcro)
I've a push light above the escape window so I can see what I'm doing
For small fires without any training these
https://www.screwfix.com/p/firechief-fa ... _container
Reputable firm make industrial fire extinguishers beware of crap on eBay / Amazon

And instinctive method of use... Everyone can use a basic aerosol can ....... Safe on all domestic fires including chip pans / cooking oil and live and electric items eg a toaster at 1m distance