Anything inside Teams for people management you use and can recommend?

I honestly don't think there is a fully Microsoft solution to this. We were the same way for a long time with our goals inside Viva Goals, and reviews in Excel sheets, so on and so forth. After the Viva goals retirement, we looked for an OKR software replacement that would live inside Teams and ended up finding a more all-in-one solution called Teamflect (after someone on this very forum recommended it to me).

So far, we've had great success with it, digitizing the entire PMS. That being said I'm sure there are plenty of great tools like it in the app store. In fact, I've also heard good things about Perdoo, but we've never really had to check it out. I think your best bet is to find a PMS with strong Microsoft Teams integration.

Let me know if this recommendation helped and please mark it as a solution if so :)