on Jakku when she was about 5 (based on her looks in Luke's-lightsaber-induced Force Vision), meaning Kylo was ~15 at the time.
I seriously doubt that a 15 year old, even a grandson of Anakin, would be able to wipe out entire Jedi Academy of Luke's. Even Anakin was well over 20 in Revenge of the Sith.
But none of the canon sources I am aware of offer any details to be certain.

A:

No. In Rise of Skywalker we learn that Rey was in fact Chancellor Palpatine's granddaughter. Her father was living on a Sith planet named Exegol. He escaped, fathered Rey and was subsequently tracked down (and killed) by a Sith loyalist named Ochi.
For the record, there's also no indication that Rey had any formal training in the use ofGreat Dunmow hotel owners call time on 'Inflexible' staff

PUBLISHED: 09:30 06 August 2009 | UPDATED: 07:20 30 May 2010

STAFF at the Saracen s Head Hotel have been made redundant after being told that they were not flexible enough . In total, five members of the Dunmow High Street hotel s workforce – including managers Paul and Sachj Newson – have been shown the door, two

STAFF at the Saracen's Head Hotel have been made redundant after being told that they were "not flexible enough".

In total, five members of the Dunmow High Street hotel's workforce - including managers Paul and Sachj Newson - have been shown the door, two of which are parents with young children.

Owners Merchant Inns say the cutbacks are a result of the hotel section closing down