I rarely see SOT above 5h, perhaps 6h at the max. These 8-9 SOT people talk about I have never seen myself. Just like you, I'm not a heavy user. Chrome browsing, Viber, WhatsApp and occasional YouTube, that's it. For a while I thought my phone had hw issues. After a while I didn't care anymore. Luckily the Warp charge will do it's job and charge the phone fast enough.Thanks for your help.
What I find weird is that idle drain is 0.57/h but SOT is average and my usage doesn't include heavy tasks (all I do is use telegram whatsapp google chrome sometimes youtube and phone calls) as you can see it's nothing much, people with the same usage report 7 to 8 hours some get to 9 and I only get 4 can't even reach 5
Yesterday I started playing with governors and set them to conservative, right now I'm in the middle of testing them so I hope they improve something we'll see.