We first start by looking for this famous Azuradonia Sylyxion:

For this, the legendary https://www.idcrawl.com/

We stumble upon two results:


We already know the country where she lives:

We find the same 13 photos on her Flickr and Twitter, which seem to be pictures around her workplace.

We then do a search via her usernames, we come across an Instagram:
https://www.instagram.com/azuradoniasylyxion/

Here we find two posts with quite strange codes in the description:

We find a OneStop in one of the photos:

After multiple attempts to find the place, in part:
Make about ten overpass queries to search all the onestops that are near a bus stop and a school as well as garages...

I decided to use Yandex and Google Lens to search for each of the details that can be seen in the photos, this is how I conducted this search:

We stumble upon this link: https://www.onthemarket.com/details/7552153/

Which gives us the address of this house near the onestop.

We therefore find the Onestop via Maps:
https://goo.gl/maps/yEs62NaNSUyXYEDh6

Then, by using the Flickr map, we find a photo containing a message "Save me" as well as GPS coordinates

The GPS coordinates take us to Greece:

By clicking next to and then clicking on the point again, we find a place named "flag2", with a review containing the flag:

FLAG: crew{you_managed_t0_s4v3_m3_th4nk5!!!!}

### Honorable mentions of searches:

To find the onestop, I tried to make an overpass query:

[out:json][timeout:2500];

{{geocodeArea:UK}}->.searchArea;

(
  nwr["traffic_calming"="cushion"](area.searchArea);
)->.cushion;

(
  nwr(around.cushion:15)["brand:wikidata"="Q65954217"](area.searchArea);
);

// print results
out body;
>;
out skel qt;

And this one also:

[out:json][timeout:2500];

{{geocodeArea:UK}}->.searchArea;

(
  nwr["highway"="bus_stop"](area.searchArea);
)->.bus;
(
  nwr["building"="garages"](area.searchArea);
)->.garage;
(
  nwr["addr:housenumber"="81"](area.searchArea);
)->.townhouse;
(
  nwr(around.townhouse:250)(around.garage:200)(around.bus:100)["brand:wikidata"="Q65954217"](area.searchArea);
);

// print results
out body;
>;
out skel qt;

Unfortunately, openstreetmap did not have the data we were looking for.

#### Recreating the city's logo
After recreating the city's logo to try and search for it:
(with no success of course, I should have used https://govbins.uk/)