Question

i wonder if u intrude to reply me ....is this sentence correct?​

Answer 1

It's incorrect. The word 'intrude' means 'to annoy people by entering a place/situation where you are unwelcomed".

In case, if you are trying to make a sentence themed around 'don't want to reply me', you may frame this sentence:

'I wonder if you are unwilling to reply me' or simply 'I wonder if you don't want to reply me'.