How are indicators used in crypto trading?

How are indicators used in crypto trading?

AT C Indicator

Free Download AT C Indicator

Fibonacci Mystery indicator

Free Download Fibonacci Mystery indicator

Fibonacci miracle indicator

Free Download fibonaccimiracle2

FX_Mastery Indicator

Free Download FX_Mastery

Newgen_Bora indicator

Free Download newgen_Bora

Which indicator is best for crypto?