わかんないけど

I don't know, but

→ 分かる
phrase Rare #34,775
I don't know, but Informal spoken form of わからないけど. Often used to soften a statement or express uncertainty before giving an opinion or suggestion.
JA: わかんないけど、今日は早く帰ったほうがいいと思う。
EN: I don't know, but I think we should go home early today.

よくわかんないけど

I’m not really sure, though.

— ブレット・トレイン (2022)

わかんないけど・・・

I don't know, though...

— 千と千尋の神隠し (2001)

まあ帆高いいのかわかんないけど

Well, I'm not sure if Hodaka is the right choice, though.

— 天気の子 (2019)

良くわかんないけどこれで気持ちがマシになる事もある

I don't really understand it, but sometimes this makes me feel a little better.

— ムーンライズ・キングダム (2012)