The next big predictable trigger looks to be the next 'halving' in 2024 at which point the hashrate difficulty doubles making it twice as tough (or half as lucrative) to mine BTC. This should mean that anyone wishing to obtain or use Bitcoin will become more likely to buy it than mine it, pushing the prices up. As long as the tech development stays top-tier & it remains a functional internet currency, which is quite likely, we will likely see more intense bull runs 2024-5.