Hi,
For this you must increase the authority of your website. To gain authority you must first have patience, from one day to the next it is not. You can carry out a content marketing strategy so that people read and share your content through social networks, that's a good sign for google, in addition to this, you can carry out a linkbuilding strategy (get links with good authority > 30 and that is your theme and language preferably), in addition to all the above you have to have a well optimized website, both Google and your readers will appreciate it. You can also do guest blogging, that is, write articles in other relevant blogs of your theme.
regards