I'm not really sure what you're talking about here. Maybe you have some update I don't, but in my browser when I long press and image, I have options to save, share, and a few other things. I even installed Brave to see if it functions differently, but I still have a Save Image option.
The flashlight toggle depends on the size and where you tap (as noted by others). If it's just the icon, tap to turn on, tap to turn off, hold to open strength dialog. If it's the icon with text, tap icon to turn on/off, tap text for Strength dialog.

