@Ana1234 - Most gardens will eventually come into balance if the gardener is careful to try and follow natural patterns. It's not enough to not spray and hope the beneficial insects find your garden. You have to make sure your garden is a welcoming place.
Honeybees do need a variety of different kinds of flower, so if all you are growing is one crop, that's going to be a problem for them. Predator insects usually need to have places to hide in order to do what you want them to do. Some insects are attracted by particular plants and need those around to do their work.
It's complicated in some ways, but in others it is actually easier than a more barren garden, because diversity is key and that will often result when you do a little less work on scrubbing out every little invading plant.