I felt very similar when I started working in Go last year. Coming even from languages like Typescript and Python which are most definitely _not_ functional but do have some of the niceties like map/filter/reduce, I was missing it a lot in Go.
What I also found was that there was a whole class of errors that I hadn't seen in years due to mutable state and poorly written for loops/ranges when compared to map/filter/reduce usage.
We introduced `samber/lo`[1] which provides a lodash-like library, generics compatible, to Go. This has been a big step-up and has improved my experience with writing Go immeasurably.
My colleagues now (kindly) joke every time they see a PR from me that includes a lot of samber/lo usage that I'm slowly replacing every for loop I encounter.