Yeah missing a day or even 2 will happen, unexpected things will happen in life. As long as it's just one off thing, i wouldn't worry about it. Only when it becomes a pattern it's worth looking into why it happens and what can be done to offset or compensate for it, if even necessary.
I wouldn't really recommend doubling the work the next day to offset one missed day, mostly because with training we're supposed to gradually push our bodies limits so it could keep up with the adaptations we're aiming for. Mostly to maintain long term consistency.
Suddenly doubling the workload, puts disproportionately bigger load on recovery and can interfere with subsequent workouts.
Aka, trained steadily for 10days, missed day11, did double on day12, but was still completely exhausted during day13 so either really low quality training, though sometimes even showing up is good, or completely skipped day 13, but now tried to offset another missed day by doubling workload again.
Please don't take this in a negative way, you're working out which is good. Just letting you know some pitfalls that can happen. Being aware of those can help in avoiding those.