It’s not clear. The elections were widely reported to be fraudulent and voter intimidation and violence were widely reported. A meaningful portion of the world’s imprisoned reporters are in Turkey. It is trivial to find articles and reports on this.
What you're trying to claim is ludicrous. He won the presidential elections by a far margin of 22 percent points however in local elections his party lost by only about 0.16 percent points (48.77% vs 48.61%).
And the violence and voter intimidation? I don’t understand what you are saying I’m wrong about. I’m stating that fraud, violence and intimidation maintain Erdogan’s power.
Edit: My link was to the 2018 presidential election, yours is to the more recent 2019 elections.
Edit 2: I’m not sure what you find reassuring about the 2019 elections - is that the link you intended to post? The bit titled “Controversies and issues” is completely terrible.
Didn’t the opposition candidate concede that Erdogan won the election fair and square last time around? Why would the Turkish opposition lie if it’s not to their advantage?