Jamboree India is the number one institution for preparation of IELTS
Check out institutes near kohat enclave
British Council. It’s genuinely nice. Even I took coaching from there. The fee is reasonable and the faculty is really good.
Rise global academy and Achiever's point as well but to be frank no institute is best and it is sbout the guidance you seek. While I would say research a lot as there are so many institutes you hear a lot but then once you go, things get different. Also, all the best!
chk institute near kohat enclave