InTheTempest
Hello and welcome. There are several things you can do to protect yourself and your home. Is it your marital home that you're living in? If it is, make sure all his things are out of the house. Clean or spritz anything you're keeping with salt water. Go round with a broom (even if you have carpets - it's the action and the symbology) and sweep each room from the corners to the door, from the furthest point from the front door, and then sweep all that negativity right out of the house. Clean around all the openings (fireplace openings, windows, doors, vents etc with salt and water. While you're doing that, concentrate on nothing negative can get past. One old charm is a rowan wood cross tied with red thread above doors and on the chimney. Another old one is to bury a bottle of nails and your own pee under the doorstep as a barrier but that might be a last resort 😂
It's coming up to the right shopping season to buy nice big reflective balls to work as witch balls. Hang them in your windows to reflect the negativity back. You can do a lot with mirror magic, even hanging a mirror to face in the direction of negativity will help.
To protect yourself, build your shields. A lot of people like to imagine a wall, or armour etc. I like to see mine as either an iridescent bubble or a reflective sphere around myself, bouncing everything back. You need to work on this mentally until you can feel them protecting you, bouncing stuff back, letting it whoosh over your head without touching you, while also working on how to stop people pushing your buttons.
I hope this helps. To rebalanced the energy in a room, use sound. Go to each corner and around the edges of a room while simply clapping your hands, right up into the corners and ceiling as well. It's amazing how much less stagnant the energy in the room will feel like after that.