I know you regret it, but there's nothing you can do to change it. I can somewhat relate to what you're feeling right now, but not at the same degree, since your transactions are way higher than mine. When I returned to the Bitcoin scene and this forum, back in December 2020, I managed to recover two Blockchain wallets with microbalances left in them.
This is one of them. Honestly, seeing the transaction value with today's price did hurt a little.
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I believe, there are many stories like that today as the crypto users before didn't have any idea that they will see the bitcoin's price this high. We can't say hold also because we don't know the future. What if we haven't reached this stage? And btc is not popular. People will just ignore and forget what they had in crypto. So if you don't want to regret someday, maybe, try starting to accumulate some satoshis. But don't expect too much as you may be disappointed if what will happen is not what you expected.