Welcome to the platform Okoluh. Let me contribute to this spread discussion.
In trading, every time you click on the buy button you are buying at a price that is higher than the market price and this is because the broker has added his fee to the buy price. By the time you sell, you sell at the true market price so the difference between the buy/sell prices is what we call the spread.
Spread can either be variable or fixed spread.
Most brokers charge a variable spread meaning the spread is not a fixed amount, it can change when there is increased fear in the market. Most times when markets are calm you see the variable spread drop but when markets are fearful you see the variable spread increase.
Some other brokers charge fixed spread which remains the same irrespective of whether or not there is fear in the market. So, which one would you go for fixed or variable? Well, they have their advantages and disadvantages. Fixed vs variable spread has already been discussed on this thread https://www.mytradingland.com/thread/fixed-or-variable-spread-which-033c87#2c6e5e