If this is a serious question I would seek the help of a priest or other holy person to help.

Who’s been in your house? What portals could they have come thru? ( horror movies bring in those vibes)

What’s it doing to you???

Some tips

Believe in the Power of Christ. (( Jesus if that’s the name you believe on)) Yeshua

quote psalms and tell it to leave it’s not wanted.

Soaking music on YouTube play it in the background daily

Use sage. Use salt at entrance and window or around haunted items.

Raise the vibrations in the house to joy.

Saint michels prayer.

Saint Michael the Archangel,
defend us in battle.
Be our protection against the wickedness and snares of the devil.
May God rebuke him, we humbly pray;
and do Thou, O Prince of the Heavenly Host,
by the Divine Power of God,
cast into hell Satan and all the evil spirits
who roam throughout the world seeking the ruin of souls.

You can, by yourself or with another believer, command it to leave. God gives us the authority.

Some incenses and spices do it too. Basil garlic thyme cinnamon that kind of thing

Protection ceremonies and cleansing rituals. Circle of salt white candles and since ur christian maybe a cross holy water and/or bible passages about repelling evil written on paper and burned by the candles.

Ask so e one to help you be rid of that creature.

Bury two warts off of a troll and three hairs off of bats under an oak tree at midnight. Then spin counter clockwise 3 times. No more or elves will appear.

There is no such thing as demons. All in your head so see a shrink.