People cheat and contort with bent rows, then abort because they feel no gain.
In my opinion, after years of trying different approaches, the Pendlay row is the gold standard for bent rows. The key to the Pendlay row is to keep the back PARALLEL to the floor through the entire lift, and to lift the weight as dead, deloaded weight for each rep.
Take a slightly wider than shoulder width stance, bend the knees and flatten the back to parallel, and grasp the bar with a wide grip (between clean placement and snatch placement, or at least one handwidth outside clean). Remain parellel and pull the bar completely to your CHEST by contracting the back muscles, then return the bar completely to the floor and DELOAD. Pause briefly, then repeat. 5x5, followed by a series of add-weight 1x is what I usually do.
Doing it properly is important, and will probably involve starting with less weight than your dick thinks you should.
Look on google and youtube for Pendlay row.
