Hello.
I use attached stem technique. Take a long stem from the shrub. Leave it attached to the shrub.
Remove leaves in the area that will lay smoothly on the soil next to the shrub.
The leaf nodes is where the roots will form.
Cover with soil next to the shrub, place a rock or brick over the top of stem to keep the soil and stem in place.
In a few weeks check for root growth. When roots have formed along the leaf nodes then you have several plants growing from each node.
Cut between the root growth areas. Plant each root section in good potting soil or plant directly in garden.
I also use damp moss on trees and shrub branches for air rooting.
Remove leaves. Wrap that section of the branch with damp moss and cover air tight with plastic. Secure with rubber band or duct tape.
Keep the moss under the plastic moist. I use a syringe to add water without disturbing the wrap.
After a few weeks cut the rooted sections from the branch and plant in the garden or pots as needed.
Of course this depends on growing zones and good weather conditions or over winter in protected area placing a bucket over the section rooting. Check for dampness don’t allow the stem to dry out . By next spring the roots will be ready to cut and plant . Softwood stems works best.