The 'standard' advice for a calorie deficit is to deduct 500 per day from your TDEE, which is based on losing 1lb a week - but I agree with others you need to put your details (height/weight, activity level) into a TDEE calculator - without knowing that you might be in a huge deficit at 1500 or barely there. I would say you may need to play around with what works for you and feels sustainable, it's better to have a smaller deficit and lose more gradually but be able to stick with it long term, than a big one that you can only manage for a week or two. The general advice is not to reduce to less than 1200 per day, if your TDEE is very low you will be in a smaller deficit.
General hints, work out what works for you in terms of meal timings and composition, theoretically you can eat however you like so long as you stick to your calories, but personally I have to focus on lean protein and lots of fruit and veg for bulk as I'm just too hungry otherwise - skipping meals / intermittent fasting can be a useful tactic, as obviously spreading your calories over fewer meals means you can eat more per meal, particularly useful I find if I know I'm eating out or having more of a treat meal - again I use sparingly though, as I've discovered through experimentation while I find it very easy to go the whole day without eating and don't even feel hungry, I do then feel ravenous in the evening even if I've had a big dinner, whereas if I eat at least a good wholesome late morning breakfast and/or lunch I'm much more satisfied later in the day.
Planning is so critical for me, it's boring but I eat the same breakfasts and lunches on repeat, easy things I can prepare at the start of the week and then grab quickly for work or busy days - again otherwise I know how I am, left to my own devices I'll either end up mindlessly eating something processed and unsatisfying or more likely skip the meal entirely then wonder why I've fallen headfirst into the treats on the sofa in the evening.
Finally I do really recommend increasing your activity if you can, in whatever way you can, it's true what they say that you can't out-exercise a bad diet / weight loss is 90% diet, but for someone like me who is short and old, our TDEEs are so low that even some marginal increase by saying upping your step count or going for a daily short walk can really help make the diet sustainable. Better yet if you can start some strength training and build some muscle this really does help as again TDEE goes up (muscle mass requires more calories to maintain) plus you will look and feel better. And just generally the mental/psychological benefits of finding some exercise you enjoy, are so immense, as women the whole diet culture can be really toxic and teach us to hate our bodies, whereas I find sport and exercise can really help you reconnect and appreciate your body for the amazing things it can do...