Welcome to Shopify Community.
Try changing your default language from Settings → Language → Published Language and the select the English language.
If you do not have english language translated, then you need to have Shopify Translate and adapt app and enter your contents on English.
Please be careful while changing default language. If you do not have contents on the new language, your site will break.
So, i recommend you to first do it on sandbox environment, test it out thoroughly before changing the default language on live site.
Thank you,
Sajat
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