[2021] What the hell is the secret to Tusk Thumpers

Lord I just get so annoyed. I get how to beat them. Hit all 4 legs, hit the green part underneath, destroy the guns. But I’m fine until I hit the 4th leg. It becomes almost impossible to hit. It will just keep rotating indefinitely or jump away or do the dang thing that throws you a hundred feet away in the air when I FINALLY get my sights lined up. I will seriously spend 45+ minuets killing a LEVEL 30 solo because hitting that last leg is nigh impossible. What the heck is the trick to it? Do I really have to spend almost an hour to kill an incredibly minor enemy? I’m using the resource flair because I’m open to any changes or builds. I currently use Revenant with the corinth. But I’m more than fine doing something else and I have most warframes.