Can I use my passport to go to Macau?

Of course. If you are going to a foreign country, taking off from Macau, or flying from a foreign country to Macau, then naturally you can and should use your passport. This is a normal transit through Macau. If you are not going to a foreign country and want to use your passport to enter Macau and then return to the mainland, it is not possible according to regulations. According to regulations, there is a bad record. But now Macau seems to have some flexibility in actual operations. That is to say, if you enter Macau with a passport via Macau but do not go to any foreign country, you can stay for 7 days for the first time within a month, 2 days for the second time, and you will be refused entry for the third time. But starting in the second month, you can start repeating the process again.