If you think something changed and the points you are naming are relevant in terms of keeping a bird like this, go on living your illusion...

About your "aviary" - as soon as someone decides to remove you from where ever you are "camping", it will get destroyed since it is hopefully too big to carry it away.
Not a proper solution.

What have you been feeding the last 2 birds?

You bought some medicine for the bird on the internet.
Check the condition of the bird you kept in Hungary starting on September 2022, you made enough posts. Read your own words, especially when your birds condition changed massively.

Ask yourself what and why things went wrong.

Not here to fuck you up, but this "i am so sorry for you shit" is not helping you at all and if i need to be the asshole opening your eyes at least a little, i am still fine with it...