I'm learning swing trading with good results but I'm totally stuck need help

I've been into swing trading for over a year now and I've managed to get an average of 8% return a month for six months in The Trading212 demo account. I trade in The Daily Time Frame Indexes, stocks, Forex and Futures( no crypto for now) My only bibliography has been The art and science of technical analysis by Adam Grimes which digs mainly into fundamentals, trading psicology and not much also. I read it multiple times, designed a method with 5 trades and a few guidelines that im going to further expand it this winter. So looking upon the big picture everything seems to be going well but I feel like im in a crossroads.

I'm doing all this by myself and have a few questions that are crucial:

1) Is the CFD Trading212 account a good trading account?

2) Suggestions on further bibliography and journaling

3)Funded accounts

1. I've read all over the internet for signs of Trading212 not being a reliable broker. It doesn't have transactions comissions but Overnight Interest keep eating away between 25% and a third of my P/L. I also once read that there were difficulties from time to time when taking the money away from the account. I want to know mainly that its not a scam and also if there arent any better options of brokers

2. for now the only source of information ive had is that book but id like to know if any other books offer good quality information like this one. Ive also been looking into making the jump towards daytrading somewhere in the future(or at least have the option to if i wanted) . So id appreciate any suggestions on information (courses, YouTube channels, blogs, preferably free) about the Daily Time frame, weekly, and lower.

I dont know if courseras courses are worth it (If someone could tell me if the free day trail of 7 days doesn't charge you when ending it at the sixth day I'd sincerely appreciate). I also dont know anything about AI use or trading algorithms, i do everything by hand. For now i keep exhaustive journals where i write about the margin it takes to open a position, the rate of exchange between currencies when opening positions and making partial profits, and comments of the patterns I trade (I dont know if this is maybe too much detail).

3. I plan to open a CFD Trading 212 account in january. I know funded account exists but not much apart from that. I've read that thy take a portion of your profits (How much exactly?????), that sometimes you need to bring some of your capital, that they have a maximum loss per day (of 5 %, which seems likely to eventually get hit, dont know what happens then); that they could be a scam.

Furthermore, Its likely these funded firms are more prone to breaking if a disaster happens, since they can a offer high leverages while Trading212 offers up to 1:20 or 1:30, and closes margins at half loss. And also, you have to first prove with a demo account that you do have a profitability before being given the 100K. I also read the regulations over in Europe are a bit shady (Im spanish), so any help or guide in thah matter would be sincerely appreciated

PD: Any help answering these questions is deeply apreciated.

If you want to talk in private just DM me, trading is as lonely as a source of income could be and I'm eager of human interaction between traders.

Ivare Enim Euge and good luck