I suspect its often even an advantage to travel in Thailand alone. (possibly in other countries as well, but here we do talk Thailand) Thai people seems usually friendly and helpsome, and they will of course sooner tend to help an alone foreigner, than a bunch of them talking foreing among themselves. Having a pleasant posture, a friendly or at least, shy smile, doesnt hurt.
I have followed on Youtube travel experiences of a wannabe Muay pro. A nice, likeable fellow, decent english but barely some few words and phrases in Thai. Whom used free time between scheduled matches to take a several week tour from north to south, doing training at every gym he found on the way. (and yes, it was almost always possible to train, sometimes even for free one or two passes).
OK, some of the incidents where he got extra help meeting nice people, just because he was alone.
He goes by train. No air condition, but he is happy to find a seat near the fan. The older Thai women sitting around him, fellow passengers, are nice to him, presenting him with foods and non alkoholic drinks as gifts... They show him the wendor selling things, but he doesnt even need to buy from the wendor.
He tries to hike (hich hike). An hour passes, no luck. He gives up, goes back, but somebody is running after him. A driver saw him, fetches him, he gets his ride. The drawer sees he is a foreigner, and has no water with him in this hot day. Driver buys him coffe and a minerale water bottle...When they come to this next town, it begins to darken up. Driver tells him it may be difficult to find hike in darkness, it will be better if he takes the bus. He drives to the bus station, helps him with finding the bus south. I dont remember if he also buys the ticket, but he did certainly gave lotsa of good help! Yes, I got touched by this mans compassion with the stranger.
Next time, he is in an widespread tourist area. A man on a bike stops. He offers; You may ride with me. I will be your guide and interpreter during the day. You pay me just some money, my lunch and a drink to the lunch... An excellent proposal! The truth be said, this driver fastened in the lunch restaurang; they had good and cheap drinks there... But our hero could lend the bike, and do his own sight seeing without problems. So, if nothing else, a cheap way to lend a motorbike for a day, and an interesting experience...
Etc...
As our hero said, Thais are typically buddhists. Honesty and being helpsome is important for them. In the typical tourist cities however, there are many whom had learned to live on tourists, even using their inexperience and naivity. Occasionally even robbing. So you must look out some in such cities and places. Dont take stupid risks.
But outside on countryside, and cities not typical tourist cities, there are hardly any such people nor real dangers... Of course, our guy being a serious Muay, never ever got drunk. Beer was the strongest he took and some occasional drink.