how to use Pattern strategy instead of nested IFs and foreach in java? [closed]

this code is working properly, but I am thinking of using the design pattern instead of using too many IFs

 public void filterByCategory(String filterCategory, String filterMainSubCategory, String filterSubCategory) throws InterruptedException {
        actions = new Actions(driver);
        for (WebElement mainCategory : mainCategories) {
            if (mainCategory.getAttribute("class").equals("accordion") && getText(mainCategory).equals(filterCategory)) {
                clickButton(mainCategory);
                Thread.sleep(3000);
                for (WebElement mainSubCategory : mainSubCategories) {
                    if (mainSubCategory.getAttribute("class").equals("accordion")
                            && getText(mainSubCategory).equals(filterMainSubCategory)) {
                        clickButton(mainSubCategory);
                        Thread.sleep(3000);
                        for (WebElement subCategory : subCategories) {
                            if (getText(subCategory).equals(filterSubCategory)) {
                                actions.moveToElement(subCategory).click(subCategory).build().perform();
                                clickButton(applyBtn);
                                break;
                            }
                        }
                    } else {
                        for (WebElement mainSubCategory2 : mainSubCategories2) {
                            if (getText(mainSubCategory2).equals(filterMainSubCategory)) {
                                actions.moveToElement(mainSubCategory2).click(mainSubCategory2).build().perform();
                                clickButton(applyBtn);
                                break;
                            }
                        }

                    }
                }

                break;
            } else if (getText(mainCategory).equals(filterCategory)) {
                WebElement cat = mainCategory.findElement(By.tagName("div"));
                actions.moveToElement(cat).doubleClick(cat).build().perform();
                Thread.sleep(5000);
                clickButton(applyBtn);
                break;
            }

        }

    }