Rebalancing tax drag without a tax advantaged account

I'm from Italy where we dont have tax advantaged accounts.

Currently my approach is 70/30 LQQ(QLD)/Gold and selling gold to buy 3QQQ(TQQQ) in drawdowns until QQQ hits ATH, then selling all the 3QQQ to buy LQQ/Gold to get back to 70/30.

However this creates a major tax drag, are there any EU investors who have found better ways to deal with this ?