Best budget lens for the panasonic lumix gh5s?

Here is what the site says about that.

From Panasonic Lumix GH5S: Panasonic Lumix GH5S: A mirrorless camera by Panasonic with a 10.2-megapixel Micro Four Thirds sensor, announced in 2018. A low-light video body with a 10-megapixel sensor and no stabilisation. Specs - Maker: Panasonic - Mount: Micro Four Thirds - Sensor: Micro Four Thirds, 17.3 x 13mm, crop factor 2.0 - Resolution: 10.2 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2018 - Type: mirrorless camera ...

From Panasonic Lumix GH5 II: Panasonic Lumix GH5 II: A mirrorless camera by Panasonic with a 20.3-megapixel Micro Four Thirds sensor, announced in 2021. The GH5 updated with live streaming and better video specs.

Quoted from this site's pages.