Maybe try experimenting with different things solo. You don’t have to tell him what or when you’re going to spent some time exploring your body. Maybe some just soft music just to calm your anxiety a bit. That probably plays a role in it. You having anxiety over not having an orgasm or maybe how he feels. Especially if he’s voiced being upset or thinking he’s inadequate or something. The anxiety of not wanting him to think it’s him or upset him. But I would definitely just take some time with yourself. Try stimulating different spots of your body. No one says it has to be vaginal intercourse only for you to have an orgasm. There’s nipple orgasms, anal, simply just touch can get people to climax. You are human and you are a woman. We as women sometimes put a lot of pressure on ourselves and always in our heads. Which makes sex a chore in a sense. Maybe try different toys, clit stimulator with multiple different functions, clit and gspot toy, anal sex, anal plugs, nipple clamps, different lubes(don’t forget the lube!!), there are so many different options and you don’t have to just stick with ONE thing. If it takes multiple things to get you there then that’s just more fun! Think of it that way. You’re not cheating if you are exploring your own body. Just throwing that out there. Just in case. Lol don’t be ashamed either. Try to wind down beforehand.
GET OUT OF YOUR HEAD! Sex is supposed to be fun. Think naughty or not at all. Lol hope this helps!