Credit Spread profitability

Hi!

As a new option trader, I have some basic questions…

I've been trading credit spreads with a small account.

I only write one contract each time with 5 points spread, 30-45 days exp.

After three months of trading credit spreads, I've noticed that my strategy is generating less profit than I initially expected. I'm looking for insights on how to improve this.

Considering the premium I collect ($1.20~$1.50), the broker fees ( $2.60 for 2 legs x 2—open and close ), and the fact that there has always been a debit at the close, the net profit ends up being far less than the possible maximum profit. I feel that the ratio of the broker's fee to Net Profit is quite high. I didn't think the broker's fee weighed in so much.

I was thinking of increasing the number of contracts, but then I would have to pay even more fees.

Also, what about increasing the spread instead of increasing the number of contracts? Besides the fee issue, I don't know which is better, increasing the # of contracts or increasing the spread to improve the profitability.

I'm eager to learn more about the credit spread strategy and understand if there are any key aspects I might be overlooking. Your feedback would be greatly appreciated!