I had a bunch of socks back in the day that I used to spread my activity out with. Had to up my game as the years go on because even if you're not using them for ban evasion or vote manipulation, it will never not look sus to moderators because they just want to have a profile they can build on you. They recently just rolled out an ai tool that does exactly that.
My last proven methods were joining a bunch of the sub's on this list and then only voting on posts for 3 months. No comments, only votes. After that time period begin commenting on r/newtoreddit and posting on karmafarm subreddits. I couldn't tell you which ones are still viable, they'll only net you around 15 karma/post. After a month, you'll have enough karma to clear any entry checks and seem legit. Delete your posts on the farming subs, people will dig through your account and they will get opinions about stupid things.
Since it's such a long process to get started and reddit hands out permabans at a glance, you may as well start a new account warming every month. Use a VPN and change servers. Check your accounts ban status by viewing yourself with your other accounts. NEVER interact with yourself, not even votes. That's the easiest and first tell. Try not to subscribe to all of the same communities each time. Never use the reddit app, only browser or something like red reader which logs in to each account separately without linking them.
You'll know one of your accounts has been bagged by moderators because your comments will no longer be visible when logged out. Reddit doesn't notify you anymore, part of their new strategy. They just want to keep undesirables in a vacuum.
Good luck, hope there's still something of use to you in that god forsaken place. Oh and keep tabs on the r/modhelp sub, it will keep you in the loop of new techniques they roll out. Also it's just funny.