themselves · pronoun /ðəmˈselvz/Full view
themselves (REFLEXIVE)
A2 the reflexive form of the pronoun "they"
Dictionary examples:

Did they enjoy themselves at the theater?

They asked themselves where they had gone wrong.

Learner example:

They helped themselves [to] some fruit and sweets. (Key English Test; A2; Farsi)

(by) themselves
A2 alone or without anyone else's help
Dictionary examples:

The kids arranged the party all by themselves.

They did the catering themselves.

They've decided to run the club themselves.

Learner example:

Most people in Hong Kong do not make brea[k]fast themselves. They like eat[ing] out. (Skills for Life (Entry 2); A2; Czech)

themselves (EMPHASIS)
B2 used to emphasize the pronoun "they" or the particular group of people you are referring to
Dictionary examples:

The staff themselves were unhappy with the decision.

They themselves had no knowledge of what was happening.

Learner example:

Many times they think they themselves [have taken] part in a car race. (First Certificate in English; B2; Greek)

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