Well, I don’t think anyone is really sure just how exactly time travel can mess with stuff. I would probably take a page from some time travel movie I saw. I would want to avoid any sort of temporal paradox and avoid too many changes.
So, I would probably remove myself from the equation as much as possible. Go to a hotel or somewhere where I can avoid accidentally running into anyone I might know. Leave all electronics behind, but take a book or something. Spend the whole day avoiding TV/News/People and just reading or work on perfecting a skill. At the end of the day I would call up a broker from the hotel room and find out which stock had the greatest percentage gain that day. Just enough information for one good trade.
Then I would go back to that morning, buy up a ton of that stock, live out life normally, then sell the stock at the end of the day.
Rinse and repeat for a short time.
I would absolutely avoid something like winning the lottery, but for those of you who would use time travel to win the lottery, you might want to follow the advice from this comment here: https://old.reddit.com/r/AskReddit/comments/24vo34/whats_the_happiest_5word_sentence_you_could_hear/chb38xf/
When you can get ticketed for speeding while your car is on the back of a tow truck:
https://www.the-sun.com/motors/11008328/photo-towing-van-speeding-ticket-evidence/
Or a red light traffic ticket when your car was stolen:
https://abc7chicago.com/chicago-red-light-ticket-camera-illinois-car-stolen-theft/11677595/
And the police/courts won’t help you because it’s a problem from the private company running the cameras… I think we can see where some sort of AI backed camera network is headed.
A bandaid to fix this might be to setup an easy way for someone to dispute the charge. For every day that it takes the company to review the dispute, they would need to pay back the accused the same amount that they are charging them (with a minimum of paying them back twice the amount of the fine).
Even then, I’d rather cameras not be used in this way at all.