Dog adoption in Edinburgh, Scotland Akita Cross Rottweiler x GSD Dog "Atlas"

I am urgently looking for a home for my 3.5 year old male Akita Cross Rottweiler X GSD. I have recently found out I am pregnant and unable to care for Atlas. Atlas was born in February 2021 and has been with ourselves since he was 9 weeks old. Lockdowns from Covid-19 have meant that he has not been socialised how he should have been and this has resulted in some issues that require someone with more experience to further his training. Atlas is energetic, playful and can be nervous/reactive. He is unsure of new people, which can result in him snapping if an unknown individual tries to touch him. When he meets new people he shows interest and sometimes will jump up wagging his tail (this is something I try to stop him doing) however, even after his initial desire to interact if the person invades his space or attempts to clap him he will react usually with a growl or snapping. He has had limited interactions with other dogs and has become reactive, this displays as lunging towards other dogs if they are too close (usually with wagging tail but hackles up) and if a dog reacts to him by growling, barking or invading his space he responds by growling and lunging. As a puppy Atlas did interact with my parents Rottweiler X GSD with no issues and I do believe my lack of knowledge is preventing this issue being resolved, with time and correct training I would believe he would socialise with other dogs, there is certainly a desire to interact from him. He is always muzzled around new people and when out walking which has ensured he has never bitten another person or animal. Due to his breeding I would have used a muzzle in these situations anyway as a safety precaution as he is a strong dog. At feeding time Atlas does resource guard, this displays as standing over his food and growling and using his body to push you away from his food. I have worked on this but again a lack of experience means the best solution I have found is to take his food to him giving him a wait command, placing his food down and moving back before giving the command to get his food. This works well and I always allow him time on his own to eat. Atlas likes to play with all kinds of toys, he also enjoys fetch which is limited due to him being muzzled when out the house. He enjoys some off lead walking when the park is quiet and free of many dogs, he will recall and stay close by if there are other dogs however if they come within his threshold he is no longer able to be recalled as he locks on to these dogs, he will not react or interact with people usually when off lead. I have attached a couple of pictures of Atlas, I am sorry these are not great quality.