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.
Overtime, one of the major challenges an investor encounters is fear, because as the price of bitcoin is becoming high and due to it volatility changes are meant to occur by either dipping on increasing so the challenge that a beginner faces is the fear that they might buy bitcoin at a high price and peradventure it dips so the fear of dipping after the have bought it in high price can't be overestimated.
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.
Similarly, another challenge of buying and HODLING is speculation as due to the fact that a lot of experts are making predictions of the price falling due to unforseen circumstances might make a beginner to pause before accumulating and it the quest of waiting for the the price to dip it now increases instead, so no matter the price of bitcoin as a beginner what you need do is keep buying and hodling and possibly apply the use of the dca method.
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.
That's the more reason we need to keep buying and hodling even if it doesn't dip as the future of bitcoin is unpredictable, it might really keep increasing like looking back from January when the price was around $20,000 and now that the price is around $36,468.10USD so you can speculate the price in 3-5 years and see the growth.