How would I find out if/where crypto I bought might be accessed?

Hello. I'm moving and as I was packing/throwing stuff away I found a sealed envelope that said "my name crypto - do not throw away" on the front. Inside there is a piece of paper with 12 seemingly random words and at the top it says "all lowercase". I don't remember buying crypto, but maybe I did in the 2010's? If I do have crypto somewhere how can I find out where it is? Is there a "wallet" or other storage solution that specifically uses 12 word passwords? Would

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