well here is the thing, tech stocks will always be on the move till we figure out how to get out of this solar system. Since the beginning of humanity, we have always looked for ways to become more technological advanced. Yes, the stock market crashes every so often, but makes a recovery. And even professional investors are all in for tech stocks. They been saying the same thing about TSLA, AMZN, AAPL, BABA since the 90s. that it is going to crash, burst, or high risk; and sure they did crash, but nothing they couldnt recover from. New companies for sure will come and rise and take out a sector or brand; look what happened with blackberry.
But in a sense, it is not very difficult to follow the stocks on what the world is shifting to. Clean energy is a no brainer, Battery powered and its suppliers is a no brainer. Cloud computing, AI, advanced medicine, etc. You are really going to tell many of us that EV is not going to be the huge shift? that digitizing money is not shifting already? break through technological medicine is not the future? The true question would be, what companies will grow, stick and/or emerge? TSLA, yes it might be in a bubble territory right now, but WHAT IF, in the next 20 years they continue to dominate. we truly wont know if their stock price will hit 5k in 10 15 yrs.
Next best thing is just invest in Index funds or ETFs. they switch out accordingly and do the guess work for you. Even ETFs and index funds like VOO or VTI all have tech in them. in all honesty, what else are you going to invest in? PJ, JNJ? they still are looking for ways to become technological advanced medical or value.