Choice of Mods

If you don't mind with yandere male, then Lovers trophy and courtin' cowboys. Both game are created by Mr Fishess. You have to read the trigger warnings tho, as the games are really hardcore...

Here's another link that recommend lot of yandere male games. Although I'm not sure which one are the toxic one, you can try it yourself

I don't know if this will be up to your taste, but since you asked about hard dom yan, you can try Unknown Caller and Love Lock from BondageBunny. The unknown caller is available on itch io and it's paid ver. And love lock is also on itch io but still in demo. The author has patreon page if you want to see and play the longer ver of love lock, though...

And, if you're still want to see more 'toxic thrill' kind of vn, you can try "The Price of Flesh" by Gatobob. The main theme is not yandere and more of 'Horror-P0rn survival', but the LI(s) are all psychotic. It's the same as Boyfriend to Death series if you've played it.

But you have to pay around 15 dollars for "The Price of Flesh" game or so if i remember correctly (the game is available on steam and itch io). I'm sure IGG games already cracked the game for free, so you can grab it there. idk if the link is still up or not :').