You are perfectly on track. Some people lose slower than that, some people very fast, and others in between. Social media can be a bit misleading because you see a lot more people posting about their weight loss when it's going really good and not as much when it isn't. Everyone responds in their own way. Some people get there in 6-8 months, and some people get there in more than 24 months. Most of us are somewhere in between, and it's all normal.
I guarantee that if you follow your plan's guidelines and then continue to make good, healthy food choices, stay hydrated, maintain a calorie deficit and work in some resistance exercise, YOU WILL reach your goals! There will be stalls and slow weight loss here and there in your journey, but during that entire time, good things are happening in your body.
We aren't designed to lose weight, we are designed to protect it, and even though the surgery gives us a smaller stomach/pouch and some hormonal changes that give us a weapon against those biological roadblocks, it is still slower for some and faster for others.
Focus on eating the right things and staying hydrated. Step away from the scale and take measurements and then remeasure each month. Concentrate on continuing to develop a new relationship with food and good habits that will last the rest of your life after you reach your goals, no matter how long it takes.
Don't do anything extreme like reducing calories below recommendations or trying a fad diet like keto and avoid doing too much high intensity cardio. Those things will trigger your metabolism to slow down due to a starvation response. Stick to the diet guidelines and do resistance training to help maintain muscle mass, which also helps your metabolism. HIIT is a great option to do quick workouts that build muscle and get the heart rate up without spending tons of time exercising, and walking is great for overall health (but it doesn't do much for weight loss...exercise is overrated in this regard).
Don't get down on yourself or be concerned about how fast or slow it's going. I actually think slow is better in some ways because your body is adjusting little by little and you can really concentrate on building those new habits that will stick with you forever.
You'll be okay! Stick to it and have faith! You can totally be as successful as you want to be.