調べたわけじゃないけど私の印象ではって英語でなんて言うの？

この場合、次のような言い方ができますよ。 ーI haven't really looked into this, and it's just my thoughts on the matter, but of all the four seasons, I think there are about as many people who like fall as there are people who like spring. 「調べたわけじゃないけど、私の印象では、四季の中で秋が好きな人と春が好きな人は同じくらい多いと思う」 ここでは、I haven't really looked into this, and it's just my thoughts on the matter, ... で「調べたわけではないが、私の印象では…」と言えます。 ご参考まで！