best bed temp for pla is 65c.

How fast are you printing ?
How fast are you printing the first layer ?

And just because it's a new printer does not mean you don't need some kind of print bed glue.
Creality are not known for quality. Whatever bed coating they've used will be the absolute cheapest they could find.
So don't expect loaves and fishes miracles when all you have is 2 sardines and a crispbread to feed an angry crowd of looters (sorry 'protestors') :-)

Okjay so numbers
Print the first layer SLOW - no slower than that.
I usually go for 5 or 10mm/s
Yes on some prints the first layter can account for 50% of the overall print time. But I almost never get failed prints - so you pays your money and makes your choice.

Most pla should work fairly well.

The other thing to look at is z-gap and bed levelling.
Not sure if the 5 has some kind of autolevelling or not.
But that's not of much use if you haven't got it properly levelled manually first anyway.