What do you mean by investing in? Day trading or buying  and holding for the future (2026 perhaps)?

The bull run may not be over but be very careful of the mistakes people make due to FOMO (Fear Of Missing Out), you may buy the asset at it's peak price only for the price of the asset to start dropping drastically for months or even years.

If you want to buy Bitcoin, what you should ask yourself is, if you bought Bitcoin today, and the price dropped back to 8K shortly are you willing to wait until the next bull run(probably after 4 years)
Can you afford to lose the money you are planning to use to buy bitcoin?