It means to go at very long route
Sirjee forein kyu ni ho sakta
Foreign ke sath country hota to ye right hota
'Foreign' is an adjective (विशेषण), not a noun (संज्ञा). You can say 'I am going to a foreign country' or 'to France' or 'to the USA' but not 'to foreign'.
Abroad mean विदेश
I am going to abroad
I am going to abroad , to abroad is also right
Sorry, no. 'Abroad' is not a place - it means 'to a foreign country', so adding a second 'to' is not correct.
By the way foreign Q ni ho skta
Out of way from our country