The default maximum upload size in WordPress is 2MB. Here’s a simple and effective way to increase the maximum upload size in wordpress:
Create or edit the php.ini and and add this line of code
upload_max_filesize = 64M
post_max_size = 64M
max_execution_time = 300
Save it in the wp-admin folder and when you reload, you’ll see that the upload limit has increased.
Hope this works for you as well.