Monitoring chart: prometheus-operator Grafana behind a proxy

Hi, not sure if i missed the category, but I was wondering if anyone has a use-case where the monitoring chart needs a proxy to be able to use functions like Telegram Bot Alerts and similar.

At the moment without the proxy I am getting a timeout error.
Simply setting the env variables for http_proxy, https_proxy and no_proxy wont help on its own because a certificate from the proxy server needs to be trusted.
Has anyone activated this or a similar function and what was your way around this?