Ok so I've been doing the Reddit thing seriously since around January and figured I'd share what I've learned because I wasted a lot of time at the start.
The first month was rough. I was doing lot of errors like dropping links, replying or posting too much, getting shadow ban, real bans, etc...(have now around 20 accounts active)
What flipped it for me wasn't a tactic, it was just knowing the right subreddit to farm. My karma went from 4 to like 380 in that window and suddenly my posts weren't getting auto-removed anymore.
The other thing nobody really talks about is that most Reddit threads are useless even when they look relevant if they don't rank on google or don't get visitors it's useless..
Smaller subs also work way better than big ones for Reddit SEO. I got more signups from a 3k sub than I ever did from a 30K sub.
The thing that was killing me though was the time. Scrolling through subs to find threads worth replying to was eating 1-2 hours a day before I'd even written a single comment. I tried a few tools, most were garbage or wanted to post for me through managed accounts which is exactly what I didn't want. Ended up sticking with Reppit AI because it just scores threads by buying intent and drafts a starting point, then I rewrite and post myself from my own account. Full disclosure I pay for it, no affiliation, just what worked. Cut my research time down to maybe 20 minutes.
A bunch of tools out there post for you directly connected to your account, you should 100% avoid them it will get your account shadowban for sure if they use reddit api to post.