I am wondering if I am a suitable candidate for forehead fillers.

My forehead is on the flatter side and sunken, so I don't really go out without bangs.

I envy people with voluminous foreheads, so I am seriously considering getting fillers this time.

However, now that I’m actually about to do it, I’m worried it might look too artificially puffy. I want to add volume naturally, but would a deeply sunken forehead like mine qualify for filler recommendations? If anyone has had forehead fillers and is satisfied, could you please share some tips on which brands are good? I’m also curious if there are any side effects like the filler sagging downwards over time. I look forward to your kind reply.