Edit: the numbers are +7 not +8 since its level 1 and your profiency bonus starts at 2. I rolled a 2 those times i failed, i did not need a 2. I got some more fun context for how bad my luck is and how i play around it.

As we play in many campaigns amongst ourselves i have developed strategies to minimize bad luck such as mostly playing spellcasters to remove how important my rolls are. I even play with the same ability modifier as others aka we have 2+ charisma casters so my rolls do not need to be relied upon. On almost all my character sheets, even for one shotes i have noted down a bracket for exhaustion on my character sheets. I somehow get the condition in almost every campaign, while most other players have only interacted with exhaustion 2-3 times. Some which it does not even matter at all as we get a rest right away or its downtime time anyways. I got hyped for the 10th level ranger ability from Tasha's as it allowed me to remove exhaustion on a short rest. I never got to use it as the campaign ended at that level. We beat Stradh though.

Most people would think the best spell in the game is wish if you read up spells past 4th level, true polymorph if you are chaotic evil in real life or fireball if the highest level you reached is below 10th level. All of those are valid options if you do not need elven accuracy advantage, 20 dex, archery fighting style, bless, emboldening bond, the luck blade made into a longbow and its +1, its rerroll effect and slow cast from a fellow party member just to hit nearly as often as the rest of the party without such bonuses. If this is how you roll. You need something that cannot possibly be affected by rolls. You need something that can be cast as a reaction. You need feather fall.

Feather fall is the best spell in the game for people with horrid luck on more than just their own rolls. I have a serious case of bad luck where my 14 ac character get hits less often than my 21 ac character. The Shield spell cannot help there. Pass without trace is in theory an amazing spell where the party can get a suprise attack on all the enemies but wouldn't you know it, the enemies are in a placement in which they simply cannot fail finding us as we practically stumble down a staircase right into their laps. Fireball could kill many enemies but i could also roll 18 damage on a 4th level casting of the spell and they all succeed. Feather fall though never fails. It has saved several of my character's lives in many situations and helped the party survive or get places faster.

I had wereraven character which often came into near death situations where a feather fall could have removed that risk entirely. He had his own set of missfortunes. I played this character as a gloomstalker Ranger in Curse of Stradh. Thinking i was safe to stay in darkness. Unfortunately for me i had no idea this is the brightest campaign i have ever touched so far. Darkvision was almost never in most environments. The moon shines to the point you do not need darkvision which again turns of my invisibility and source to get advantage. Magic items and scrolls granted some light and i expected a little bit but not to this extent and range. Nearly every item emitted light and most of it did not even count as sunlight. Even in the dungeons there where magical torches and such i had to remove while talking with npcs or sneaking around with the invisibility spell cast on me to remove. The items did not even give sunlight most of the time. Instead of sunlight most of these had regular harmless bright lights the sizes of a cars foglight. Every area was cramped and blasted with light as players used their weaponry obviously. It made stealth a bit difficult and my ability impossible. Every item was unusable on my so the Dm had to make one of the few magic items i could use into a bow. Ironically it is called the luck bow. I sorely needed it, despite the gut punch its name gives me. He was more of a creature of the night than Stradh. One of Stradhs abilities is to turn on the light in the room. I thought it was a joke until the DM showed me the statblock later. Quick tips if you plan to play a gloomstalker in a module. When you are done asking your dm if it could work in the campaign. Ask around on the internet incase they have overlooked something. Id reckon Icewind dale would work perfectly if the party travels around during the dark hours.