I send a lot of transfers in BTC from my wallet and want to start tracking these payments by writing personalised notes on where the transaction came from or to as well as other information about the sender or receiver.
You can do this if before you send, some wallets provide such a feature, download electrum wallet and then add notes before sending those transactions.
If you have some knowledge with Excel you can build a trading journal where you will have more detailed information, I have written detailed information about it here: [GUIDE] Trading journal
for third party services you can try:
- Coin Market Manager (CMM): https://www.coinmarketman.com/journal/
- TraderSync: https://tradersync.com/
- Trading Journal Spreadsheet (TJS): https://trading-journal-spreadsheet.com/cryptocurrency-trading-journal-spreadsheet/