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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Option 1: Like https://btcpayserver.org/ with Monero add-on is the only one I know works right now. But there could be more... I didn't really dig into the topic. BTCpayServer will require a bit of technical knowledge to setup. I don't know how tech savvy you are.
Another option, if OP is interested in public 'crowdfunding' for themselves (not a private point of sale like HotShop) The Wishlist as a Service (WaaS) could be useful. It's being used by a Monero Research Lab member here : https://rucknium.me/donate/ , and is quite straight forward to setup
I would buy BTC on a decentralized exchange, such as Bisq: https://bisq.network/