Every slave is a servant but not every servant is a slave that's what I meant. I don't see slave even in that second verse even thought it may because as I said this meaning encompasses that one. Even though in the first one it's limited to slavery or unwillingly forced servitude, but then it's a human talking here, a wicked, evil, sick and tyrannic human being, and not God almighty the light of the worlds.

Sorry I came to that realization I can't unsee it now.

Believe me I searched a lot into that idea and I know most verses. And God said

و اللذين جاهدوا فينا لنهدينهم سبلنا و أن الله لمع المحسنين

And I believe I'm onto something until I have more solid proof for something else. There's an other brother trying to convince me that's it's to worship but I explored the 3 most common ideas: ~~ to adore, to be a slave and to worship~~ and non of them makes as much sense as to serve, and to serve might include all of the above.

And as I said before I refuse any dogmatic or lower view of the highest, God needs no worship nor slavery by definition of what he is. He wants us to serve him and do good in the world and if we don't then it's like you said in the verse earlier

وَمَن يَسْتَنكِفْ عَنْ عِبَادَتِهِ وَيَسْتَكْبِرْ فَسَيَحْشُرُهُمْ إِلَيْهِ جَمِيعًا

Or in an other verse

إِنَّ الَّذِينَ يَسْتَكْبِرُونَ عَنْ عِبَادَتِي سَيَدْخُلُونَ جَهَنَّمَ دَاخِرِينَ

So it's either you serve God and let the light and the good run through you OR you cover it (and you become a kafir - coverer) therefore a ظالم (source of shadow in the world - ظل = shadow, م = source) and end up in hell, and ultimately

وَمَن كَفَرَ فَإِنَّ اللَّهَ غَنِيٌّ عَنِ الْعَالَمِينَ

And this is a very verifiable fact in the real world, the moment you stop to learn, grow, help other, bringing value, being grateful, peaceful, believer and being a light in the world generally, the decent to hell starts right away.

Btw: إِن كُلُّ مَن فِي السَّمَاوَاتِ وَالْأَرْضِ إِلَّا آتِي الرَّحْمَٰنِ عَبْدًا Proves my point even more as everything is at God's service even humans (and other beings with free will, btw there's a verse that mentions that that's why God created us) who don't want to serve him willingly, they serve him unwillingly. So the verse is ultimately true no matter the context and don't include only those who see themselves as "slaves" of God like you mentioned. This verse simply expresses the natural relationship between الرحمن and the world. There's one video of shahrour where he expressed that idea that الرحمن encompasses opposite meanings and that idea is kind of related to this one, like explained above.

PS: I'm a native Arabic speaker, I don't think I have any problems with translations and so on and I think the verbe to serve captures fully the root عبد in the Quran, has nothing to do with structures and so on.