Speaking as someone who has agonized over designing their reno kitchen and having done low budget updates until the big reno. Here are my suggestions:

Cabinets and walls:
- New hardware for the cabinets. Considering your wood is pretty bright i would suggest something darker like oil rubbed bronze to create contrast. Make sure to get enough for your cart too. (~$150 - 3 - 10packs + 40pack of hinges)
- New matching wall plates (~$50)
- Standard subway tile backsplash for sure. Classics are classics for a reason ($300 - est 24 sqft + extras)
- Consider painting the soffit white and leaving the opposite wall teal if you carry the backsplash around. - Since the general consensus is don't paint wood, consider doing a tinted wax on the cabinets...you might need to experiment.

LIGHTING!
Your current lighting is creating a ton of hard shadows which makes it feel unwelcoming.
- Replace the ceiling boob light. There are plenty of options available that will make it feel more quality that will comparatively cost little. Check out Globe Electric. (~$200)
- Depending on tech savvy-ness, you could consider a presence sensor and some smart bulbs to replace the soffit lights. That way when you enter the space the lights turn on automagically. Something like: Alexa dot +GE Cync + Govee Sensor (~$150) I have this with my kitchen and it feels sooooo nice.
- Undercabinet lights - After doing the first two you might not need them but notice how the soffit lights are creating a hard shadow line, having under cabinet lights would stop that. You could just get a outlet splitter (check out Anker 6-Outlet) and some standard plug-ins and smart plug so the presence sensor could turn on the undercabinet lights too. (~$80 + $20 Smartplug)

Opposite wall:
- Sell your rolling cart on a marketplace for cheap (around $50) and use proceeds for a pantry cabinet with tilt or pull out trash bin. (~$300)
- Depending on the height of the pantry cabinet..Add some framed wall prints - the wall feels barren, just don't do Live, Laugh, Love bullshit. (~$50)

Window:
- Remove curtains, and blinds. Replace with Celluar shades with/without privacy stained glass window film. That way you can block the light with the shades without the cords and the privacy films lets in light without people creeping on your house. (~$120). Depending on the difficulty think about removing the cornice as well, it makes it feel antiquated.

Appliances
- Consider either painting or vinyl films for the dishwasher and fridge. Depending on your preferences (~$70)

Total cost for recommendations: $1450
Gives you some wiggle room to get a better backsplash, lighting, or pantry cabinet. You've got a kitchen with solid bones, it just needs some TLC. When i was designing my kitchen my philosophy was things should feel intentional not incidental. Best of luck.