Well I have been in the cryptocurrency industry since a long time, and I believe that you can't time buying/investing in crypto. Unless you are a technical analysis expert, you can may be place a buying order and buy BTC 5-10% cheaper (since currently BTC is ranging between 9k-13k$).

You should invest some of your money in buying BTC, and/or you can also buy bitcoin with ethereum or any other altcoin you hold. BTC in longer run will always have a edge on other coins. This understanding will come from learning new concepts.