We can notify the user that he/she has successfully logged in.

This will help increase the user's convenience, and confirmation to where he has registered through Gmail, and also we will have verified information of that person.

This might not sound like a problem, but a general enhancement feature that is almost implemented everywhere and will obviously solve the problem of security in terms of email addresses and end-to-end communication.

What we can do once somebody fills in his/her credentials, it automatically creates a trigger in the database, on saving the data, a broadcast message to the required email address that ' You have successfully logged in' should be sent to the email IDs which the user has entered.

When a user enters an email and password, we don't have validation checks for a password if it is strong, medium, or easy therefore a validation layer for the password is needed.
We can do it using regex(let's say we can give some conditions that if it contains uppercase, a lowercase, at least this length, at least one special character, and a (.) should strictly be there, then it suggests being strong password, similarly for medium and easy, this suggestion must be visible to the user.
Can refer to this!
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions

When we try to log in to the website, we have two compulsory fields name and email to be field, when he/she successfully logs in, it redirects us to the signup success page, instead of this if we add an alert that 'You have successfully logged in' within the same signup page, it will remove unnecessary hassle of calling another http.

During login, create two dropdowns (one for which tech stack the user wants to explore, include various tech stacks in it, such as java, javascript, cpp, etc) and another dropdown for the purpose (say, if he/she wants to study as a student, a professional, an amateur, etc.) and made these fields as compulsory fields to be filled in.

We don't have an option to log out as of now, if we could make that an option, log out option should be made visible in UI, and once logged out it should redirect to .homepage('/').

We have a chat icon in the header.ejs, but does not have its implementation as of now. Therefore, try making routes for it, for which we are supposed to implement a chat feature on our web(it must be three to four lines work at max).

For more consideration go to the routes folder, which consists of two basic routers for POST requests (search and display all), similarly, you might have to make a new file within it to move further and then configure that file in our main file(app.js).

You can refer to this guide to study more about routing https://expressjs.com/en/guide/routing.html

When we try to log in to the website, we have two compulsory fields name and email to be field, when he/she successfully logs in, it redirects us to the signup success page, instead of this if we add an alert that 'You have successfully logged in' within the same signup page, it will remove unnecessary hassle of calling another http.