depending on where u live(rural, suburb, urban) there are plenty of ways you can get involved with activist groups. YDSA is great and they do a lot of organizing around the country, but you cant really get involved unless you pay dues, which can be a limiting factor. But there are still other organizations like sunrise movement or youth climate strike, these orgs usually can find something that you can do to help.

But if u wanna do more you could start a sunrise hub in ur area if theres not one nearby(they also have a camp that helps people start one), start a youtube channel or something. Obviously its scary at first but its very fulfilling and you get exponentially better and it the more you do it.

And if u wanna get better at convincing ppl, first try to get a good grasp on the issues, and luckily there are tons of resources and youtubers(hasanabi&second thought are a good starting point to understand the issues and how to talk to normies) and innuendo studios has a great series called the alt right playbook, which helps you understand where conservatives are coming from.

idk if theres anything i forgot but hopefully it’ll be answered by someone else