うるさくて [urusakute] = to be noisy (-te form for reason, means, continuity, juxtaposition)

外にいる人たちがとてもうるさくて、眠れません。

soto ni iru hito tachi ga totemo urusakute, nemuremasen.

= I can't sleep. The people outside are very noisy.

https://www.learnwitholiver.com/japanese/daily-sentence-853