If you wish to deactivate some plugins but don't have access to your WordPress administrator page, there are a couple of options.

In your Hostinger account, go to Websites → Dashboard next to the site in question. Then, search for Security on the sidebar and click on it:

Scroll down to the section Installed plugins to find all the plugins currently installed on your website. Move the toggle to disable or enable them:

If you don't have the WordPress dashboard enabled or prefer managing data via files, you can disable the plugins using the file manager.

Open your website's File Manager and access its wp-content folder (domains/domain.tld/public_html/wp-content). There, you’ll find the plugins folder:

If you don’t use Elementor on your website, rename the entire plugins folder to plugins_disabled (or any different name) – this way, you'll disable all the plugins inside this folder:

If you do use Elementor, rename every folder within the plugins folder except Elementor. Alternatively, you may create a new folder and move all the plugins' folders there except Elementor.

Both options – renaming the folders or creating a new folder and moving the plugins there – will disable plugins, as the path to files will be altered. Renaming the folders to their original names or moving them back to the /plugins directory will enable the plugins again.

If a website starts working after disabling all plugins, it's necessary to identify which specific plugin causes the trouble:

This way, you'll identify the corrupted plugin and get your website back on track.