The scanned print you show(if it is accurate) looks like you have very eneven development. This is expected with a 30 second time in Dektol. It also looks underdeveloped and flat. Could be the scan and many of us could tell a lot more looking at the real print.
A lot lower wattage light. Or, put it under the enlarger and stop the lens down to cut light. Develop in Dektol for 90 seconds to two minutes. Don't pull it out before at least a minute and a half so you get the full development. Without full development of the print you won't know what is available at your exposure times.