Most brokers are offering rebates for their IBs as FxPro, Exness. I think you can try them. I also recommend you LMFX, a broker I am trading, if you want to open account at this broker to get rebates, plz pm me.
There are many brokers offering 100% deposit bonus like FBS, Finpro Trading, tradersway and betrally. However, I know that there are brokers offering rebates on commissions on New Year’s so do check out for the offers coming up if you are interested to invest.