Advice on how to make exercising a habit

I (22F) have had a desire to be fit for years but I can’t ever get consistent with it. I’ve tried online exercise programs and even got a gym membership. Nothing ever sticks. I’ve realized my problem is I set my expectations wayyy too high every time and set myself up for failure.

I saw someone mention starting small, like 25 squats a day. I’d like to do that and maybe add something each week to build a routine and make it a habit. I’m really new to this so does anyone have any advice on how to build it and what exercises to start implementing each week? Or what you did that worked for you? I am fortunate in that I don’t need to lose weight and could actually stand to add another 5 pounds on me.

If anyone responds to this, I am going to sleep and will check this in the morning. TIA 🙏