In my desire to further arrange and organize some data I thought about at G Suite and saw the possibility to link G Suite with JIRA. In this case a G Suite account was created so that it can be integrated within my organization.
I saw afterwards that the features I was looking into weren't exactly what I needed and as such I disabled the integration between G Suite and Atlassian, afterwards I even went through to delete the G Suite account (this thing triggered the issues).
Now I am not able to log into my Atlassian administration either JIRA or Confluence. When I try to log in and type my organization e-mail I am redirect to the Google Sign In, every time and sadly I can't use this feature anymore to log in.
Tried to remove all the accounts on the browser, cleared cache, another browser, but it seems to be dependent on the organization.
Also tried to recover by G Suite account, but this is not possible because it was deleted.
In the end I just lost access to log into my organizations account.