I haven't lost access to bitcoins like that but I remember when I was new to bitcoins I was first introduced to blockchain.info and I made a new wallet there with some temporary email because I didn't knew giving my mail email id was safe and worth it. Then after a few days when I tried to login, it said that an email has been sent to your email since you are logging in from new browser and since I used a temporary email I actually could never open my wallet again but I don't know if I had any bitcoins left over because I did some work as a freelancer and got paid in bitcoins which I believe I sold right away after keeping in blockchain wallet for little while.

I still wonder if some BTC are there but not quite sure and absolutely no way to retrieve them.