We often talk about toxic newbies, but sometimes we don’t pay enough attention to how we ourselves changed as a result. Make them feel welcome, and see how much Lemmy changes back.
If you (yes, you, reader) are new to Lemmy, have my wholehearted “Welcome”! Hugs on demand, cookies right there, make yourself comfy :)
Avoid politics-oriented communities unless toxicity is your thing. Start with any instance (most likely you chose lemmy.world as your starting point?), but explore others and what they have to offer. You can even be on several of them if that’s your thing! Enjoy!
Luckily, here, while admins can see how many up- and downvotes you have, it doesn’t influence anything, and that’s by design; besides, it’s unlikely that any proper implementation of karma system is possible in a federated network for individual users.