I think that the simplicity OP's question shows that it is not simply "I want bitcoin" there is undoubtedly a complexity associated with that fact of purchase that requires handling basic financial concepts, but a strategy like the one you have to acquire any asset applies with bitcoin.
Hence, It is not an easy question to answer, since handling bitcoin correctly depends intrinsically on each individual in their financial needs, really my decisions may be wrong for you, but it is what I must do at a certain time.
Very situational indeed and since not all people does share up with the same financial status and problems in life then actions would really vary and this is why whether you do sell on loss or would basically be holding until the price had recovered. We know that the price had dipped down on hitting that $15k on its lowest point and if you have purchased or bought on 69k then you would definitely
panic out but if you are that someone who do have that kind of trust and confidence towards your Bitcoin holding then for sure you would really be holding for long until it would recover.
Managing your investment would really be that always hard and not something simple. If you arent that good when it comes to decision making then you would definitely be finding yourself on a
tough situation which it might be resulting on having that impulsive kind of approach and actions which arent supposed to be done or not something worth.