Is regulations among the key factors that affects the price of Bitcoin
Not entirely the price of bitcoin depends on regulations if the regulations you mean are state regulations.
Burdensome regulations, of course, can be an obstacle for citizens in dealing with bitcoin.
What affects the price of bitcoin is the amount of demand and supply based on theory.
One of the reasons for the decline in the bitcoin price in a matter of 7 days based on the bitcoin price chart from $29,413 [Fri, 11 Aug 2023] to $26,398 [this second] was due to the large sale made by SpaceX and China's Evergrande bankruptcy filing.
So, still strengthens me to say that the economic theory that determines prices go up or down depending on supply and demand is correct.
https://www.reuters.com/legal/china-evergrande-files-chapter-15-bankruptcy-us-court-filing-2023-08-17/https://cointelegraph.com/news/spacex-sold-bitcoin-acquired-2021-2022-report