On mobile I’d suggest Fennec instead of stock Firefox since you can use add-ons without limitation, and don’t need workarounds such as the Firefox nightly.
It’s basically stock with enabled add-ons, and following the official release cycle with 2-3 days delay. Maintained by the original developers of the F-Droid store, so also a highly trustworthy source IMHO.
Just use the 1.1.1.1 app, or on your computer (or router) change the DNS to 1.1.1.1
Indonesia is soft blocking via DNS only, very easy to bypass.