You can create knowledge about brokers by searching online. For example, there are many other sites like Google, youtube, etc. You can use the demo platform of that broker by creating knowledge from here.
I use FXOpen broker for scalping robot, the company regulated on ASIC< FCA and Cysec, offer low spread mainly on the USD pairs instant execution very fast no delay, good for scalping in my experience use robot scalping.
Another topic related to scalping... You need to look not only for spreads, but also for execution speed. I don't think you can find the best result for you on the forums. Create a list of the most reliable brokers for you, preferably with a long history, and test each one until you find an option that suits you. The time spent will pay off when your trading is profitable.
HIGH RISK WARNING: Foreign exchange trading carries a high level of risk that may not be suitable for all investors.
Leverage creates additional risk and loss exposure. Before you decide to trade foreign exchange, carefully consider your investment objectives, experience level, and risk tolerance.
You could lose some or all of your initial investment. Do not invest money that you cannot afford to lose. Educate yourself on the risks associated with foreign exchange trading, and seek advice from an independent financial or tax advisor if you have any questions.
Any data and information is provided 'as is' solely for informational purposes, and is not intended for trading purposes or advice.
Past performance is not indicative of future results.