Reverse integration is a real thing and happens to many people, so know that you’re not alone in what you’re experiencing.

If you want to stay there, then you need to treat home like you’re moving to a new place. How would you make friends and build up a network? You can do that there too.

What worries me more is your mental health decline. You say you weren’t happy in the Netherlands either, and it didn’t work out in Bali, and now you’re not happy in Australia. You can’t find a partner. Can you spot the common denominator? If you’re not happy with yourself, you won’t be happy anywhere, and you won’t start to attract friends or romantic interests. As the saying goes, you tend find someone when you’re least looking for someone.

You need to get at the root of your issues and solve those, and then decide where you physically want to be. If you’re always falling for the “grass is green on the other side” thinking, that can be toxic. Do you have resources to access a therapist? If so, this would be a very useful investment. If not, then start to read some good books about mental health.

A good starting point might be these books, which are by actual psychologists.

Maybe You Should Talk to Someone by Lori Gottlieb

Why Has Nobody Told Me This Before by Julie Smith

The Book You Want Everyone You Love* To Read, by Philippa Perry

Reinventing Your Life by Jeffrey E.Young, Janet S. Klosko

Remember, you’re not alone. Many people have similar feelings, and there’s a path forward for you, you will get over this and build an amazing life.

For the things you’ve listed, Ireland is quite good. Generally very fast to get things done and not too much bureaucracy, easy to setup as a freelancer, business, online digital services pretty decent.

There are other factors that make it less ideal though, which are high rental costs, poor public transport, and health service, which really vary depending on what you’re comparing against.