No, you should not feel ashamed that your native language is considered relatively easy to learn. The difficulty or complexity of a language does not determine its value or worth. Languages are diverse and rich in their own unique ways, and each language has its own complexities and intricacies.
Being a native English speaker has its advantages, such as the widespread use of English as an international language of communication, which can open up many opportunities for you in terms of travel, work, and connecting with people from different cultures.
It's important to recognize that language learning is a personal journey, and the ease or difficulty of a language may vary depending on an individual's background, linguistic aptitude, and exposure. Learning any language requires effort, practice, and dedication, regardless of its perceived difficulty level.
Instead of feeling ashamed, you could view your proficiency in English as a valuable asset that can be leveraged to explore and appreciate other languages and cultures. Language learning is a rewarding experience, and by embracing it, you can broaden your horizons and develop a deeper understanding of the world around you.