Don't even need to try it. For a lot of the more controversial tags (like NTR), all you really need to do is search a thread and see what other people are saying.
Search "NTR" in an NTR thread and you'll almost certainly see a bunch of posts discussing what sort of NTR it is and whether it's avoidable, skippable, or mandatory. Search "lesbian" in a game with a female protagonist and the lesbian tag and you'll see pretty quickly whether or not that means a dedicated lesbian path or if the female lead is still forced into scenes with guys. Search for "futa" in a game tagged with it and you'll find out pretty quickly if you're forced into scenes with a futa character, if you can avoid them, or if it's a game where you can toggle futa on/off (since a fair number of games allow you to just have the futa character be pure female instead).
In other words, you can save way more time by just seeing what other people have already said by spending about 30 seconds using the Search function (or, worst-case scenario, just posting and asking if no one's answered the question yet). Rather than downloading a game and potentially spending a few hours being outraged by content you hate, it's usually very easy to avoid the things you don't like if you try.
But way too many people these days seem pathologically allergic to effort of any kind.