It is difficult to say definitively which language is easier, as the difficulty of a language can depend on a variety of factors, such as an individual’s native language, their language learning experience, and their goals for learning the language.
Bengali and Tamil are both Indo-Aryan languages that have their own unique characteristics and features. Bengali is spoken by over 250 million people, primarily in Bangladesh and India, and it has a complex writing system and a rich literary tradition. Tamil is spoken by over 78 million people, primarily in India and Sri Lanka, and it has a long and ancient history.
If you are interested in learning either Bengali or Tamil, it is important to consider your own language learning goals and needs, and to choose a language that is most suitable for you. It may be helpful to research the languages and their characteristics, as well as to try out different language learning resources and methods to find what works best for you.