Hello and welcome to the forum.
🙂
As
@trophywench says have you tested your basal(background insulin)? If you are not having enough basal then your bolus will have double the work to do. Once you have your basal sorted check your carb ratio. Do make sure you only make one change at a time otherwise you wont have a clue what's worked or hasn't.
Take one day at a time and remember Rome wasn't built in a day. The best strategy I ever learnt was to treat my blood sugar reading as just that and nothing else. So if higher than expected or wanted then a correction given same if low, snack eaten then move on don't dwell on things (life's far to short
🙂 )