A potential solution to the fermi paradox: Technology will stagnate.

I have mild interest in tech and sci-fi. The fermi paradox is something I wondered about. None of the explanations I found made any sense relying on too many assumptions. So I generally thought about extremely rare earth theory. But I never found it satisfactory. I think it's rare but not that rare. There should be around 1 million civilizations in this galaxy. give or take if I had to guess maybe less or more. But I am on the singularity sub and browsing it I thought of something most don't. What if the singularity is impossible. By definition a strong singularity is impossible. Since a strong singularity civilization could do anything. Be above time and space. Go ftl, break physics and thermodynamics because the singularity has infinite progress and potential. So if a strong one is possible then they would have taken over since it would be easier than anything to transform the universe to anything it wants. But perhaps a weak singularity is also impossible. What I mean is that intelligence cannot go up infinitely it'll hit physical limits. And trying to go vast distances to colonize space is probably quite infeasible. At most we could send a solar sail to study nearby systems. The progress we've seen could be an anomaly. We'll plateau and which the end of tech history one might say. What do you think?