If you hate gardening, I would keep things very simple so you don't become overwhelmed and discouraged then lose interest. An easy-care design means you can take your time and enjoy the process, nothing would get out of hand and you could always add more complexity and variety when you have built up your confidence,
Stick to easy-care garden principles whilst you're developing skills.
So for instance, use landscaping features that require little maintenance to create structure and interest, but don't try to create too many different areas.
Keep to a limited number of easy care plants that won't grow too big or need lots of tending. Choose plants that have a long season of interest. Keep planting beds very limited in size and easy to reach so weeding is quickly and easily kept under control. Keep plants happy and healthy by choosing a suitable spot for them - if they like shade don't plant in full sun and so on.
Keep the lawn shape and edgings simple and clear for easier mowing.
Small hardy trees are easier than larger shrubs as focal points and interest, because they don't need frequent pruning. They can provide year round interest in the garden for very little work - such as dwarf crab apples for blossom in spring, autumn leaf colour and winter berries (crab apples) for birds.
There are many varieties - choose one that has a small berry-like fruits as they don't drop off and make a mess, but stay on the trees for most of the winter until they are eaten by wildlife. Or rowan trees, which come in a variety of sizes and berry colours.
Bulbs and perennials (plants which grow back every year) and small shrubs are easier than bedding plants that need new plantings every year. Stay clear of plants that self seed and spread too rapidly, as they will soon take over.
A container pond is easier to create and maintain than a permanent garden pond, plus you can experiment with the best place to site it.
A few larger planting pots of flowering plants need less watering than lots of smaller ones, and you can try a few new plants each season in them, depending on how much time you have. If you find you don't have the time, move them out of view or plant solar lights in them for a different effect.
Here's an idea for a relatively cheap and very easy-care design that would be simple to create in your garden (the pergola would likely be the biggest cost, along with the trees).