How to add google map feature in wordpress without using any plugin?

Well first it’d be helpful if you’d explain why without using a plugin

i tried with plugin it was a success
but when
i tried without using plugin
i failed..just want to improve my skill

You’d have to be proficient in php to make it manually which could take months and months.

Save yourself the stress ?? You could open the plugin and study the code to see how it’s done.

thanks for suggestion