Canberraで迷子になった＆見つかった猫

Marc went missing from my home in Myall street O'Connor he has not been seen since Sunday 18/5 . He is an indoor cat so will be very scared if he hasn't already been found. He is microchipped I've contacted RSPCA and he hadn't been handed in. No collar. I have put out flyers around my street and no one has contacted me about any sightings he is very timid cat he doesn't really like being picked up and patted much . He is very sweet and quiet and just likes relaxing around my home. When I have been opening the sliding door for the dogs to explore the yard he has been showing interest and just looking around the grass but staying close to sliding door but then when I approach the sliding door and call him he would run straight in . He must have sneaked out without me noticing and possible got spooked by the dogs barking chasing birds as they often do. I didn't see any if this happen but it's a possibility. He had 3 dachshunds and I a biological sister cat who were both rescued by RSPCA and I brought them into my care approx 2.5 years ago when they were 11 months old we all miss him so much.