Road trip/ Scenic ideas in europe

Hello! I am looking for recommendations and advice for a road trip/ scenic trip/ mix of nature) for 10-12 days in europe, in the second half of june. I have been in europe for the past 5 months, and visited a couple of places, so I was hoping to not repeat them if possible (italy, spain, france, portugal, finland, belgium, ams, london/edinburgh, sweden, copenhagen, poland, croatia and finland)

Some countries that caught my interest (in terms of novelty and with cost constraints in mind) are: romania, bulgaria, albania, estonia, latvia area and slovenia)
I am also interested in Scotland, such as Isle of Skye, or Ireland (although I heard Ireland is pretty costly)

Are there any recommendations that I could explore? Or any advice or tips for the countries I listed above? Thank you in advance:)