Hi

Firefox for Android is doing a fair bit more than the other app that you mention, so to compare them may not be fair.

Are you watching videos or listening to audio? Do you have many tabs open? Do you have many add-ons installed?

Nothing crazy, just reading with the Reading Mode built in and some Google searches. One tab at any given time, and the only add-ons I have installed are unlock and Decentraleyes

Have you tried checking if there are any power-hungry apps running in the background? Sometimes those sneaky culprits can drain your battery like crazy. Also, peek into your phone's settings – there might be some tweaks you can make to tone down the power consumption. Maybe dimming the screen or adjusting some app settings could help rein in that power-hungry beast.