Looking for UK freelancer who is self-employed with Freelancer.com as their main income ADVICE

Hello all Freelancers! I am after some advice/help with tax returns and financial information. I'm from the UK and solely use Freelancer as my main source of income. I'm now sole-trading and would like to speak to another person in the same position as me, from the UK and using Freelancer as their sole source of income. I need guidance from one of you and using your experience to help me manage my income through the site and other tips. The budget is low due to the fact it is only advice based, a quick talk via the chat! Thank you.