I take a similar view although where you can get “fixed income securities” which are relatively safe at the moment - I’m not sure !
But yes if you want to gamble £100 a trade then 1% would mean you “need” a £10,000 account, just sitting there keeping the broker’s balance sheet looking good - so why not just keep say £2,000 in there to survive a significant drawdown period and buy something to sell on a speculative basis with the rest ?
Go looking for an undervalued asset in the real world to “Flip” ? a Car perhaps which is under-priced - a boat which needs tidying up ? Whatever you know something about !
One lot of “Gambling money” then becomes two or more sets of potential income without detriment to the size of your trades !