vanerk space accumulation etf jedg

hi all i bought this etf in my stocks isa as a speculative bet £13k total but bought pretty much at the top averaging £98 a share , currently £73, the stocks it composing of are rocket lab , planet lab, asts etc, i thought it would go up a lot more but this is a long term hold, im talking 20 years but obviously a drop of £4k currently isn’t what i want, these stocks overall are they good to hold long term to people who understand it more , also i haven’t dca in , now its £73 a share and im avera