Yet, I voted (abroad) in the last elections just fine? You do have to register early nowadays, whereas it used to be trivial to cast a vote previously, but I'm genuinely unsure what you base a claim such as "we practically lost our right to vote" on. In addition, several democratic countries disallow voting for expatriates (e.g. Ireland de jure / Israel de facto).
> This allowed Orban to get authoritian power that is now undefeatable.
At no point during the last few decades have elections been swayed by votes cast outside of Hungary.