When I recently traveled to Indonesia, I was also worried about the chaotic traffic, especially in the evenings. The most helpful thing for me was reviewing local services before my trip. I found a useful list on Gettransfer blog that explains the features of different
ride hailing platforms in detail. For example, I used Smarterthey once, and the app has good routing and real time driver tracking, which helped a lot in congested areas. I also liked that there were additional security checks and fraud protection. If you're worried about traveling during rush hour, this service was the most reliable of those I tried.