My question is this, is it possible for bitcoin to be completely immune to volatility in years to come?
Immunity might never come talking about bitcoin because in every investment area volatility is part of the game and yes this is why Bitcoin become popular to all of us because this is what we are believing here lol.
and being scared is normal but if you cannot fight that feeling then better leave this market as you are not for this.
If the OP is still afraid after fully understanding crypto and bitcoin investments then leaving investment in the crypto sector is quite acceptable. because if the feeling of fear dominates too much then it is feared that when the OP has bought at the current price and it turns out that the price has decreased slightly then because the OP has excessive fear it will make him panic and sell in a loss position. so I think OP really should be able to control these feelings of fear. because fear and greed are always used as certain indicators in crypto trading and it can hurt us if we can't control it. because high volatility will always exist in bitcoin and altcoins.