Hi, I was wondering if there is an ideal room temperature for newborn baby's room? And if room temperature CDN be related to SIDS risk?

Red Nose does not recommend a specific temperature for any room where baby is sleeping.

Babies control their temperature predominantly through the face and head.
Sleeping baby on the back with the head and face uncovered is the best way to protect baby from overheating.
It is not necessary to monitor the room temperature or to leave the heating or cooling on all night, as long as the baby is dressed appropriately for the room temperature.

Ensure that baby’s head and face cannot become covered - do not use bedding such as duvets, pillows, bumpers, lambs’ wool, or have soft toys in the cot or where the baby is sleeping.
https://rednose.org.au/article/room-temperature

Dress baby as you would dress yourself – comfortably warm, not hot or cold.
A good way to check baby’s temperature is to feel the baby’s back or tummy, which should feel warm (don’t worry if baby’s hands and feet feel cool, this is normal).
https://rednose.org.au/article/protecting-baby-from-overheating-during-sleep