Try chatwoot, it's costs 0$ for hacker edition you can self host it if you are concerned about privacy, you get ton of customisation features fir free and a very active support community. B
If you want to know more --> Why chatwoot is the best CRM out there
on the decision to make it opensource : This was a product we started building in 2017. It failed due to a couple of obvious reasons. We built on Vue.js and Rails. It was in an inactive mode for around 1 and a half years. Recently we thought of putting it out instead of letting the code to rust. Our idea is to make it something like Gitlab/Mattermost where people can host their own version and we will provide a hosted version for people who don't want to self-host. if you are further interested in the story , check this blog post
As of now, the main differentiator will be the ability for you to host the solution if you are concerned about data privacy. But over the last couple of months, we were able to make significant progress in terms of the features we offer.
I hope you are having a fun trip and do stay safe. Will be waiting to see your comment :D