I hope your wallet is ready, because a brand new Steam sale has just arrived! Best of all, even though the whole sale is themed after the Lunar New Year, the games on offer span pretty much the entirety of gaming, so it should be a remarkably easy task to find something new and interesting to play.
That said, if you're not exactly sure what to go for, allow me to give you a couple of suggestions. All of these are games I've played extensively over the past few years, which combined with their deep discount makes them quite easy to recommend. Here's the brief list, with a special shout-out going towards XCOM 2 as it's currently a mere €4 which is just ridiculously cheap for such a fun strategy game:
• XCOM 2 (-92%) €4
• Warhammer: Vermintide 2 (-75%) €7
• Resident Evil 7 (-67%) €10
• Darkest Dungeon (-70%) €7
• Dying Light (-66%) €10
• Total War: Warhammer 2 (-66%) €20
As always, this is just the tip of the iceberg when it comes to quality games that are on a massive discount. So I'd highly encourage you to browse through the sale yourself, and especially through the older games as they can give you dozens of hours of entertainment for practically nothing, all the while being fully patched and without any sort of major bugs.
Have fun, and just make sure not to take too long as the Lunar New Year 2021 sale will be going away on February 15th.