Personal taxes:
I had a tax consultant (one of the big 4) charging big money doing my personal taxes when working in Jakarta. What a bunch of unhelpful people. Acting as they worked for gov. instead of sorting things out for me as a paying client.
Later on I did the work myself filling in form 1770 S (as that is what the tax consultant do). Possible if you have someone at hand that can speak Bahasa Indonesia or use google translate. Some of these forms used to be in English as well. Maybe tax office can help. Contact info here
https://www.pajak.go.id/hubungi-kami
The forms can be found here
https://www.pajak.go.id/formulir-page/
English info
https://www.pwc.com/id/en/pocket-tax-book/english/pocket-tax-book-2022.pdf