using bluetooth for sharing accross devices

I have noticed that sharing files via bluetooth from 1 apple device to another seems to cause issues. Actually apple (2009/2017) to android(2015!) or visa versa no issues. Now and then it seems to work with apple. My new(er) macbook pro (2017) is unable to connect with my older macbook pro(2009). Well even Microsoft devices are able to communicate between eachother (some even running on Windows 2000!) with a windows 10/11.

It means to me that I cannot transfer between the devices in the way I CHOOSE to do which the device should be able to do. I don't want to use cloud because It's to much of a hasstle (unless you want to pay apple)

Its rather strange to me that apple puts so much in between devices.

Note I also use I-phone an SE1 and an SE3 with the same problems. Seems as the all talk a different language and have no clue what the other is saying whilst coming from the same country (apple)

I suppose (I hope) its me who isn't that educated. Otherwise I have to come to the conclusion that apple deliberately doesn't match their Operation Systems. Would fit in capitalistic thinking but causes me a headache.

Who has an answer?