Unfortunately that's the only reasonable advice. Did it myself a few years ago and it was painful for like 3 months and now having to use corporate BS à la Apple / Microsoft seems bafflingly limiting and counter intuitive to me.
BT dongles are a dime a dozen on Amazon. The tricky part is finding a good one, as the reviews are all fake and the manufacturers change names every week, so you never know what you're buying. There might be the odd review site out there with some useful information
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