@to-nice i dont get why people are so bad with responding to your question
first of, BAS is not necessarily the origin of detection, ive worked with reddit a lot, from an all in one tool fully in requests and browser based account generation, screenshot below
reddit had a more or less major rework of their api and general bot detection, things have changed
i obviously dont know your setup, but reddit is extremely weird with their detection
you gotta take things like browser language, proxy location, time, user agent etc. in relation, if a mismatch = flagged, then there is how you create accounts, you might want to pass the useragent to the captchasolver so its solved on the same useragent, or you might wanna avoid callback solving completely, instead go for clicking images. What do you do after creating the account? Just chill?
Fill out the form, interests, categories, subreddits etc. you gotta need some activity after creation.
in short, its a bunch of factors which just relate to eachother at the end of the day