I am using the contro select2 and I am trying to load my data through ajax, however I have not succeeded:

$('#select2_sat_regimenfiscal').select2({
 language: "es",
 theme: 'bootstrap4',
 multiple: false,
 minimumResultsForSearch: 1,
 allowClear: true,
 ajax: {
 url: "http://myapi.test:8181/api/sat/catalogos/regimenfiscal",
 delay: 250,
 dataType: 'json',
 processResults: function (data) {
 return {
 results: data
 };
 },
 cache: true,
 }
});

and this is another example that does work, but my desire is that it works through the ajax load:

$.getJSON('http://myapi.test:8181/api/sat/catalogos/regimenfiscal', function (data) {
 let options = data.map(item => `${item.text}`);
 $('#select2_sat_regimenfiscal').append(options);
});

Could someone help me with the correction of my code or with some example of select2+ajax?

thank you very much