Your really only need to state the sin not the lurid details.
Example,
“I commited adultery approximately this many times”
" I stole this much money from my employer, etc…)
God knows the details and He doesn’t need excuses.
Sometimes we might be tempted to kinda give excuses, but a confession is truly facing our sins honestly and accusing ourselves of offending God then asking for His forgiveness.
Make a list or something that should help you clearly and comprehensively cover all your sins so you make a good confession and go power through it, it will be worth it.
God Bless,
Scylla