Genuinely need some advice

Asking out of curiosity only…
Is it normal to have mandatory access to a partner’s Facebook/WhatsApp ID?

My girlfriend has access to all my IDs, passwords, and everything. If any girl messages me for any reason, she responds inappropriately. She is excessively possessive. She doesn’t spare anyone—whether it’s my university seniors, juniors, classmates, female cousins, or friends. This has been causing real-life problems for me.

It would be great if you could kindly share your opinions.

This is my first relationship, and I’m a bit of an introvert, so I haven’t been able to ask anyone these questions in real life. Thanks.

Age: 24M, 21F

tldr: too possessive GF harming day-to-day life activities.