Sure, but I vote for the party and people that aligns itself with my interests, so indirectly I do. I have also thought about attending some local meetings to talk with those representing me about some issues.
I recognise that you may not feel represented well within your system. That does not imply a failure of representation as a system of government, but could speak to the implementation of yours.
I knew about that, but I thought it only applied to personal information (with limitations with regards to there being some professional entity collecting it). If I make a statement to the press that goes on print, I cannot demand them recalling papers in order to be compliant with GDPR.
That being said, I am by no means very knowledgeable about this.