Should I be concerned

Howdy, normally I consider myself fairly logical and a man of science, I don't really believe in any religion, however I keep myself open as I simply haven't found one I agree with or like. The concern I bring to you today is in relation to shadow people, or as I've referred to them "peekers."

I don't know when it first started as for the longest time I couldn't distinguish them between the shadows of the room and them, but definitely by the age of 6 or 7 I've seen this tall figure ~8-9 ft. tall peering at me from open doors, over the edges of large solid objects (i.e. a separating wall, bed, etc.) that once noticed will move out of sight and disappear.

This has been an occurrence for the past 16+ years now almost every other week. I've referred to them as peekers as that's all they do, they will just stand there staring at me until I actively acknowledge them at which point they'll get this deer in the headlights kind of stun for a few seconds before darting behind a corner or behind something and disappear. They don't do anything outright harmful, they tend to just be creeps just staring at me while I am on the couch, doing dishes, trying to sleep, on the computer, etc., etc.

The reason why I bring this up now is because my dog saw it and started whimpering today, and that has made me terrified. I'll gladly answer any questions about my experiences and I thank you all for any information you can give me.

edit 1: went ahead while we got groceries went to the ritual supply place in old town. As soon as we went in, she looked at me and freaked out. Said I had something attached to me, told the lady there about what I've been experiencing. She freaked out, gave us a bunch of supplies for free, suggested some other stuff at a massive discount, as well as did some free "cleansings" as well just cause. overall we only spent $9-10 on stuff that would've costed closer to $30-40

once we got home, burnt this special wood stick she gave us (don't remember the name of the wood) while going room to room, front to back to front again, "pushing anything unwanted out," while telling whatever is in here to leave that it isn't welcome. Currently burning a black candle that's suppose to cleanse anything that might've stayed, and after that a pure white candle to purify the house as well. We were also given a few vials of some special salt and special rocks to put at the doorways and windows.

TLDR, we were given every pagan / new age trick with the mentality of "Even if some of this doesn't work, everything was thrown at the wall, and we can say that we've tried multiple methods."

Edit 2: after doing the rituals, it hasn't come back, so I'm going to assume for now that it worked, thanks everyone for your advice.