Fetch related 'far' records by eloquent or fluent - sql

Question

I have the following tables:
users:
------
id
first_name
current_property_id
property_users:
---------------
id
user_id
property_id
chat_user_id
nickname
chat_users:
-----------
id
identity
chat_groups:
------------
id
name
type ['Single' means the group a user is having permutation without repetition for all property users that will serve as their 1:1 conversation (in short everyone is paired with everyone once), 'Group' means more than 2 people can be in the group]
last_messaged_at
chat_group_members:
-------------------
id
chat_group_id
user_id
chat_user_id
I need to make a query to fetch all users (except me) in the property I am in and get the chat_groups I have with them (Type == Single).
I tried doing it PHP way but it takes too long (for 125 users it takes +30s of response)
This is how I am doing it in PHP
$this->currentUser = auth()->user();
//this is Fluent using DB::table and joining property_users, chat_users, and users
$propertyUsers = $this->run(GetPropertyUsersJob::class, [
'property' => $this->property
]);
//this is using simple eloquent getting groups
$chatGroups = $this->run(GetGroupsJob::class, [
'property' => $this->property,
'type' => ChatGroup::TYPE_SINGLE
]);
$chatGroups->load('members.user');
//first level of loop
foreach($propertyUsers as $propertyUser) {
if($this->currentUser->id == $propertyUser->user_id) {
return [];
}
$chatGroupId = '';
$chatGroupName = '';
//second level of loop
foreach($chatGroups as $chatGroup) {
$found = 0;
//third level of loop
foreach($chatGroup->members as $member) {
if($member->user_id == $this->currentUser->id) {
$found++;
}
if($member->user_id == $propertyUser->user_id) {
$found++;
}
}
//just to get this, I need to do nested loop 3x
if($found == 2) {
$chatGroupId = $chatGroup->id;
$chatGroupName = $chatGroup->name;
}
}
$user[] = [
'id' => $propertyUser->user_id,
'first_name' => $propertyUser->user->first_name,
'nickname' => $propertyUser->nickname,
'chat_group_id' => $chatGroupId,
'chat_group_name' => $chatGroupName
];
}
How can I convert this to a query (eloquent/fluent) instead?
#Update:
User model: I am only adding related eager loading
-----------
public function property_users()
{
return $this->hasMany(PropertyUser::class, 'user_id', 'id');
}
PropertyUser model:
-------------------
public function user()
{
return $this->belongsTo(User::class);
}
public function chat_user()
{
return $this->hasOne(ChatUser::class, 'id', 'chat_user_id');
}
ChaUser model:
--------------
public function property_user()
{
return $this->belongsTo(PropertyUser::class, 'id', 'chat_user_id');
}