I was really having a problem identifying the dip, and the best time to buy more. Since the bitcoin is high in volatility. I noticed that the more I wait for the lowest price it goes up and down. I kept waiting for long and I never achieved anything instead I started using the money to buy some economic needs at the end I will end up not buying as I anticipated.
As a beginner who just start investing on Bitcoin I don't think looking for the right dip before investing on Bitcoin is the right decision because you could end up not investing on Bitcoin at all, but however one of the challenges of most beginners is that they always feel that price of Bitcoin has gone way beyond there reach, on the contrary it doesn't work that way because you could accumulate Bitcoin with any amount you feel is well suitable for you.
However a friend of mine had similar experience as you, however he was influenced by speculation about Bitcoin that it will drop from when it was $27k to $24 so he decided to wait for the dip so that he could start accumulating but little did be know that Bitcoin price movement can never be predicted so however instead of the price to dip it continues rising and now he began to imagine how much Bitcoin he would have accumulated by now if had utilized the opportunity then.
So perhaps during the time you were busy trying to identify the dip, if you had channel the energy on accumulating Bitcoin by now you would have a reason to smile while watching your investment.