(someone) goes headfirst into (something)

Translations
(кто-то) погружается с головой в (что-то)
She went headfirst into her new job.
Она с головой погрузилась в свою новую работу.
Definitions
This phrase means that someone starts doing something with a lot of enthusiasm, energy, or commitment, often without hesitation or careful planning. It suggests diving into an activity or situation quickly and wholeheartedly.
Words
go

verb
идти
headfirst

adverb
вниз головой