Been around since 2017 and mostly screwed up regarding financial crypto decisions but learned a lot. Is it too late now?

I started to get involved with crypto last quarter of 2017 and didn't know the first thing about it... Watched my portfolio go from +300% to -95% during that bull run. Invested some more for the next bull run and watched my portfolio go from +1500% to +80%. I know, at least I didn't go negative again but I feel I mustn't have let those gains go to waste in order to invest them next run and gain life changing profits. Never knew when to sell or that DCA is an option instead of always going all in.

I've learned my lesson and expect the next bull run to be profitable, but I feel like I missed the BIG chance. How have your guys experiences been? Do you think the next run could yield as much gains as the last runs? What are your approaches / expectations?