Since you found a block it means it’s working. Unless you changed anything from the Bitcoin mining specs, the mining block target is 10 minutes.
Which means the average over a long line of blocks should be 10 minutes averaged out. Assuming same CPU speed and you are the only one mining. But there is variance, sometimes it can take 1 minute to find the block and other times it can take 100 minutes. Even Bitcoin is like this sometimes. So 30 minutes is normal.
Thank you for the information. Yes I need to figure it out maybe a better miner. But It takes 100% longer then 10 minutes with CPU.
That's called luck. BTW 100% more than 10 minutes in not 100 minutes, it's 20. You meant 10x.
What miner are you using? What difficulty are you mining at? What's your hash rate? Do you find blocks at the estimated TTF statistically over time?