Hey so I camped on my own for the first time last July. Honestly the most difficult part was deciding to do it, the actual camping part was very enjoyable and not the least bit scary. That said, I did go to a campsite. Part of the reason I decided against wild camping was because I was spending 7 nights on the Isle of Harris- it's much more remote than other places I'd been and I really liked the idea of having running water for the week.
I'm not sure if you're talking about wild camping or not, but after this experience I would definitely consider solo wild camping. I've camped in some dodgy roadside spots, and even in Fort William with friends- I probably wouldn't do this on my own as I'm scared of axe murderers..! But in a more remote place I definitely would consider it- at least there aren't a whole lot of dangerous animals in Scotland. Someone made a good point about not watching any weird scary stuff before you go camping which is a good point.
When I told friends I was planning to camp on my own, some were really surprised and were quite worried about me (these were friends who are not really into camping), but other friends (the ones more into camping) thought it was a great idea and even encouraged me to wild camp on my own. It can be easy to let other people's doubts get into your head. To some people the thought of camping on their own is one of the scariest things they can imagine, and that's completely fine. But if you feel the urge then you should go with it, a lot of people's fear comes from this built in fear of the unknown and of being alone. In truth, it's possible to feel more alone in your own bed than it is camping on your own!
I hope you have a great time wherever you decide to camp, my best advice if you're feeling unsure would be to go somewhere where there's a campsite nearby so you have options on the day. Best of luck
Top tip: bring earphones to listen to music or a podcast for that part of the night you're convinced there is an axe murderer circling your tent