To help your cat feel less lonely when you're away, here are some tips that can help:

1. Interactive toys
Automatic toys: There are toys that move themselves or behave in a way that attracts the cat's attention.
Puzzles with food: toys that contain food can encourage the cat to think and play while you are not at home.
2. High walls and play corners
Climbing equipment: Cats love to climb. Setting up a climbing frame or shelves can provide them with a place to play and move through.
Positive corners: prepare comfortable corners where the cat can feel safe and play.

3. Another company
Another cat: If there is space and possibility, consider bringing another cat so that your cat has a friend.
Other pets: If you have other pets, many cats can get along with a dog or other animal.
4. Music or TV
Leave music or TV on: Some cats like to hear voices. You can leave calm music or television with programs or videos about animals.
5. Rich environment
Changing toys: Change the toys from time to time to keep it interesting.
New scents: New scents (like cat herbs) can be added to encourage the cat to explore.

6. Play time before departure
Play with him before you leave: Take a few minutes before you leave to play with the cat. This will help him release energy and he may be more relaxed while you are away.
7. Regular routine
Keep a routine: Cats love a routine. When you leave and return at the same time, it helps the cat feel more secure.
8. Professional care
Hire someone to visit: If you have to be away for a long time, consider hiring a person to come check on the cat, play with it and feed it.
If you apply some of these tips, your cat may feel less lonely and more content when you're away.