When I want to say there are many tactics or methods so I have to end an 's' with them. How about approach?
Can I say - unorthodox approaches?
I understand that I can say unorthodox tactics and unorthodox methods but not sure with the approach...
Yes, all of those are countable nouns so you simply add the S (or ES).
What you have written is fine.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
I want to put that word into a context like this below actually,
'I have felt alienated, and humiliated after becoming a victim of the government's injustice and their unorthodox approaches to remove me.'
Something like that...
p.s. actually I think I could just say 'unorthodox tactics' but I am afraid it may be a bit offensive if they read this sentence... lol