The only one I am aware of is Coinbase.
You should check that one out.
The website has over 13,000,000 users so I am sure you will find what you are looking for.
I would like to hear more about your experience with mining bitcoin for the past year, as you said.A lot of us are trying to help each other by sharing knowledge and ideas.
24blockchains This entire website is being updated to include the top blockchain platforms and their dapps.
24blockchains https://24blockchains.com/avalanche/ has been finished. It is our first live page and what the rest will soon look like.
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