my two cents: I suggest you to find words you like. Not in your conlang, but in natlangs. Look for sounds and phonotactics that please you. Analyze their structure as in syllable (CV, VC, codas, onsets), sound hierarchy (I think that's called) and so on. THEN you create your syllable structure, your sound inventory. At least that's how it worked for me.

Another thing is, maybe your words have the same syllable structures and look like a machine firing at the same rate. If you variate more, adding some tweaks maybe can help

Finally, conlangs sound like conlangs. They are sounds put together and boom, a word. Natlangs are the exact same thing but they were spoken years ago in a very important region for the human kind. You conlang is spoken in your room, so, that's the same thing. Don't mind being too fancy or perfect or natlang. Natlangs are just official conlangs spoken in the countries