I shared the exact same sentiment when I transitioned to Windows after a long period of only using macOS. A few nice candidates I found include Wox [1], Keypirinha [2], and ueli [3].

I eventually began building a C# launcher myself and over time it has become my daily driver - feel free to check it out at https://github.com/dkgv/pinpoint.

[1] https://github.com/Wox-launcher/Wox

[2] https://keypirinha.com/

[3] https://github.com/oliverschwendener/ueli