I left sync for Summit when I gave up on anymore updates. Its the best replacement I've found.
Sync for Lemmy
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Welcome to Sync for Lemmy!

Welcome to the official Sync for Lemmy community.
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Try Summit
Boost for Lemmy can do that.

That's called Dense.
There is also Compact, that retains voting buttons on the side.

You can also choose fonts and sizes to make things as dense as you want.
Sync is still my primary, but I switch over to Voyager sometimes when a stupid bug is getting in my way.
It works - usually - well enough. The UI is just so much better than anything else.
I'm in a similar boat as you. I admittedly doomscroll too much, so I always want a ton of content. I'll cycle through New, Hot, Most Active, and Top: Day on Lemmy via the Sync app first, then switch to reddit for a little while before checking New on Lemmy again. Lemmy may not have the population of Reddit yet, but it's community comments is no where near as frustrating to read through and it's much more varied in topics than reddit's modern /all.
Hoping to wean myself off Reddit entirely.
Don't sleep on scaled! Sync supports it and it helps budding communities flourish.
