More template suggestion for views exposed form
create exposed form filters template following this naming standard: 
views-exposed-form--{view-name}--{display-name}.html.twig 

to get the view-name you can get from Backoffice (Structure > Views > search for your view > then get machine name and repalce the underscore with dash - see image bellow)


so we get this template:
views-exposed-form--media-gallery.html.twig
put your static HTML(we will replace in next step) there and clear cache you'll find the new tempalte.
if you want to print the exposed fitlers just put {{form} in your tempalte


  views-exposed-form--media-gallery.html.twig


{{form}}
but if you want to print each exposed fitler serpately follow this steps :    (Structure > Views> search for your view > Edit > click on filter name under the FILTER CRITERIA > scroll down and copy Filter identifier input value > go back to the template and print your exposed filter one by one  {{ form.$fitler name }} 


  views-exposed-form--media-gallery.html.twig



{#1.print 1st exposed fitler form element + label #}
{{ form.field_thematiques_target_id }}

{#2.print 2nd form element + label #}
{{ form.field_type_media_value }}

{#3.include all other form elment ex submit button but to prevent 
duplication remove other one #}
{{ form|without('field_thematiques_target_id','field_type_media_value') }}