USB-C to HDMI adapter connect with DisplayPort
Solution 1:
To get the best results I would recommend using the following :
Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter Link
Mini-DP to DisplayPort Cable to the monitor Link
Probably this one might work https://www.amazon.com/Plugable-DisplayPort-1-8m-Chromebook-Thunderbolt/dp/B01EXKDRAC
Hope it helps!