Tragic base, I thought the previous ones were wrong but unfortunately they are right.
I bought it on New Year's Eve, I installed it after 2 days and uninstalled it after 10 minutes.
What can I say??? For a 15 kg TV, it leans forward as if it's about to fall at any moment.
I will take it back to the store and ask for another model or my money back.

I put it on an LG 65" which weighs 25kg. It doesn't hold it well, there was instability, it leaned too much forward, the angle was terrible, it protruded too much from the wall and it was crooked. I had to come up with my own solution. I do not recommend it at all for such a large TV!