If it's specifically for browsing and videos, a tab might work well. But I understand why someone might not want a tab since browsing desktop websites can be painful on those. I don't know if an iPad provides better experience in that sense, I've never used one. On the flipside, tabs in this budget will have better screen than laptops. Most laptops in this range will come with 720p displays, but tabs will have Full HD displays. This make a lot of difference to the sharpness of text while browsing and reading, less so in video watching.
You might not find great laptops for 30k these days. Prices went up a lot during lockdowns and never came back down, as is usual. If you can stretch your budget by a bit, like 2-3k, you might be able to grab an i3 based laptop. You can then install a light-weight Linux distro on it. I would not recommend a chromebook as it will tie you down a lot. If you have different needs in future, you might want the flexibility of using Linux or Windows on it.