I am using cPanel of my website to increase maximum upload file size for wordpress media uploads. I have used the codes(found out from google) for this purpose wp-config.php
Login to your WHM panel if you have access to
Then go to Software -> MultiPHP INI Editor
Then select the php version from the dropdown, then scroll down for the upload_max_filesize which will be 2M by default, now increase it according to your need.
Also enable the file_uploads for HTTP file uploads for convenience.
If you don't have access to WHM, then follow the .htaccess method.