My pick would have to be the A Whole Nother Story trilogy, in which (spoiler warning) you can only travel back in time. But because time is in a loop of sorts, if you go before the beginning of time, you will be at the end of time. From there you can go back to any time you want to. And time paradoxes cannot be produced. Plus, your memories from the previous timeline exist as well as the memories from the new one.
The psychology of time travel by Kate Mascarenhas. Smart, a murder mystery and just really well put together on all counts. Life after life by Kate Atkinson - a kind of timeloop, but still timetravelly. Kindred by Octavia Butler. Not for the faint hearted 😬 about a black woman that gets hurled back through time to the southern states during slavery. Amazing, but not exactly feel good… 11/22/63 by Stephen King. Absolutely lovely! The gone world by Tom Sweterlitsch sci fi, complex but worth the slight headache 😅 Sea of tranquility by Emily St. Mandel is haunting and beautiful, I would recommend reading The glass hotel first though, but it can stand alone too.
FYI you can format to hide spoilers by framing the spoiler with an arrow and exclamation mark on both sides. The arrow must point towards the spoiler and the exclamation mark is always closest to the sentence you want to cover. If I see the word spoiler and then want to stop I can’t because my eyes are already on the next sentence 😅 like running into a wall after seeing a stop sign 😂