I don't know what Amazon reviews you are looking at, but virtually all of them are 4.5 and above. This is the one we used, I'll buy it for every person who has a baby that we know from now on, they rock.

https://www.amazon.com/Baby-Nasal-Aspirator-Nose-Sucker/dp/B08CMWHD3B/ref=sr\_1\_6?keywords=nasal+aspirator+for+baby&qid=1675805981&sprefix=nasal+aspi%2Caps%2C137&sr=8-6