I feel your pain For a starter mahogany (even African mahogany) is not one species so even from the same source at a different time it is often really different. More than most woods.
There is a good discussion and my “solution” here…
Some mahogany burns more easily than others, but not a good material for the inexperienced, Set your mahogany aside as you will want to try again, but try cherry or walnut first as Walnut especially is very forgiving.
For a starter mahogany (even African mahogany) is not one species so even from the same source at a different time it is often really different. More than most woods.