Help make my Labrys Barb great again

Barbs do not regain life with life leach or losim (unless going dual-wield). They regain life with ohm runes and runemaster.

Losim + titan strike is how you regen, depending on build eagle/sor can also help with that.
Runemaster for life regen 4Head

150 losim on 30k hp bogchamp

150 losim is low, and you wont reach 30k hp unless you have all charms and decent items. Or spend 2 weeks of crafting perfect items. So try again.
Neither ohm runes or runemaster gives you regen as well.

Okay, 500 losim on 20k hp? That's a lot of swinging to do. Even paladins can do better.

10000 losim on 2k hp PogChamp. Ohm runes do give life regen. Tb cotw, vindicate cotw and titan.

Seeing as you hit around 2.5 attacks per second (but lets say 2 so even you can understand) thats 1k life per second, not counting lifesteal from SoR. Add titanstrike on top of that and it's not horrible anymore. Switching to eagle in tough situation is also something that you could do. The inbuilt regen is also something you have to count in, even if it's minimal. Do you even play barb or are you only hear with the intention of starting arguments?

More more more more.

More ohm tunes and regen and eagle stance and mana on striking because more.

Moooore